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Fluid Mechanics Videos

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Funding: Science and Engineering Research Board [SB/S3/CE/071/2013] 

 

1- Benard-Marangoni instability with silicone oil

Credit: Chirag Kalelkar, Abhijeet Sinha

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2- Cartesian diver

Credit: Chirag Kalelkar, Kiran Raj

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3- Die swell with 2% polyacrylamide solution

Credit: Chirag Kalelkar, Patruni Kiran

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4- Elastic recoil with 6.6% polyacrylamide solution

Credit: Chirag Kalelkar, Patruni Kiran

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5- Flow reversibility at low Reynolds number with glycerol

Credit: Chirag Kalelkar, Patruni Kiran, Kiran Raj

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6- Marangoni effect with camphor-boat

Credit: Chirag Kalelkar, Saurav Sen

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7- Mariotte siphon (constant flow-rate device)

Credit: Chirag Kalelkar, Santosh Gavhane

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8- Saffman-Taylor-1 instability for ink+water into glycerol

Credit: Chirag Kalelkar, Kiran Raj

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9- Saffman-Taylor-2 instability for ink+water into gelatine solution

Credit: Chirag Kalelkar, Kiran Raj

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10- Self-starting siphon

Credit: Chirag Kalelkar, Santosh Gavhane

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11- Siphon

Credit: Chirag Kalelkar, Santosh Gavhane

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12- Tubeless siphon with 2% polyacrylamide solution

Credit: Chirag Kalelkar, Patruni Kiran

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13- Vortex rings using agarbatti smoke through orifice with mesh

Credit: Chirag Kalelkar

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14- Water droplet impacting pool of water at 2100 fps

Credit: Chirag Kalelkar, Abhijeet Sinha, Kiran Raj

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15- Weissenberg effect with 2% polyacrylamide solution

Credit: Chirag Kalelkar, Patruni Kiran

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16- Catenoid (Minimum energy surface for hoops)

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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17- Levitation of ping-pong ball (Coanda effect)

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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18- Minimum energy surface for a cube (with air bubble)

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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19- Breakup of a catenoidal soap film

Credit: Chirag Kalelkar, Abhijeet Sinha

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20- Minimum energy surface for hoops(with planar soap film)

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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21- Dilatancy of aqueous sand suspension

Credit: Chirag Kalelkar, Abhijeet Sinha,Santosh Gavhane

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22- Breakup of a diaboloidal soap film

Credit: Chirag Kalelkar, Abhijeet Sinha

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23- Helicoid (Minimum energy surface for a helix)

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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24- Kelvin-Helmholtz instability between dyed brine and water

Credit: Chirag Kalelkar, Ojas Satbhai, Sanat Singha

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25- Marangoni effect with soap solution, using powdered pepper as tracers

Credit: Chirag Kalelkar, Abhijeet Sinha

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26- Minimum energy surface for an octahedron

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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27- breakup of a soap film

Credit: Chirag Kalelkar, Abhijeet Sinha

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28- Surface tension of a soap film

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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29- Instability of vortex rings

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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30- Vortex tube in a bottle, thermocol balls as tracers

Credit: Chirag Kalelkar, Santosh Gavhane, Saurav Sen

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31- Ethanol impacting a thin pool of glycerol

Credit: Chirag Kalelkar, Abhijeet Sinha

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32- Rayleigh-Plateau instability on water at 10500 frames/second

Credit: Chirag Kalelkar, Abhijeet Sinha

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33- Reynolds pipe flow experiment , Transition to turbulence in a pipe flow

Credit: Chirag Kalelkar, Abhilash Velalam, Nayeeni Manoj, Ashok Kumar, Amal Narayanan

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34- Water droplet bouncing on a pool of water

Credit: Chirag Kalelkar, Abhijeet Sinha

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35- Silicone droplet bouncing off an inclined silicone-coated plane

Credit: Chirag Kalelkar, Abhijeet Sinha

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36- Standing capillary waves (with buckling) on a free jet

Credit: Chirag Kalelkar, Abhijeet Sinha

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37- Free jet of 100ppm polyacrylamide in water

Credit: Chirag Kalelkar, Abhijeet Sinha, Patruni Kiran

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38- Impact of flat-end of a cylinder on water

Credit: Chirag Kalelkar, Abhijeet Sinha

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39- Head-on impact of a high-speed spherical projectile on water

Credit: Chirag Kalelkar, Abhijeet Sinha

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40- Oblique impact of a high-speed spherical projectile on water

Credit: Chirag Kalelkar, Abhijeet Sinha

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41- Rayleigh-Taylor instability with immiscible liquids: heptane and water (with blue ink)
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42- Rayleigh-Taylor instability (closeup view)

Credit: Chirag Kalelkar, Abhijeet Sinha

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43- Faraday instability on water at 70Hz

Credit: Chirag Kalelkar, Sanket Mandal

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44- Instabilities in a Kolmogorov flow

Credit: Chirag Kalelkar, Abhijeet Sinha

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45- Magnetic putty (magnetorheological fluid)

Credit: Chirag Kalelkar, Abhijeet Sinha

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46- Droplet pinch-off with water

Credit: Chirag Kalelkar, Abhijeet Sinha

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47- Droplet pinch-off with 100ppm PAM: Delayed breakup

Credit: Chirag Kalelkar, Abhijeet Sinha

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48- Droplet pinch-off with soap solution: Beads-on-a-string

Credit: Chirag Kalelkar, Abhijeet Sinha

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49- Droplet pinch-off with paraffin: Satellite droplet

Credit: Chirag Kalelkar, Abhijeet Sinha

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50- Rosensweig instability on a ferrofluid in presence of a magnet

Credit: Chirag Kalelkar, Abhijeet Sinha

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51- Spiral motion of air bubbles rising in a water column

Credit: Chirag Kalelkar, Sagnik Paul

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52- Cornstarch solution (shear-thickening) on a speaker

Credit: Chirag Kalelkar, Sanket Mandal

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53- Collapse of an air bubble at air-water interface

Credit: Chirag Kalelkar, Sagnik Paul

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54- Drop of glycerol falling in water (flying saucer with cusp)

Credit: Chirag Kalelkar, Abhijeet Sinha

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55- Hydraulic jump of glycerol+water mixture

Credit: Chirag Kalelkar, Sagnik Paul

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56- Air bubble crossing a Water (lower):Heptane (upper) interface with surface tension ratio=3.6

Credit: Chirag Kalelkar, Sagnik Paul

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57- Rayleigh-Taylor plumes in hot dyed water over cold water

Credit: Chirag Kalelkar, Sanket Mandal

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58- Silly Putty: Short-time elastic and long-time viscous response

Credit: Chirag Kalelkar, Sagnik Paul

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59- Transition to turbulence in a (hand-driven) Taylor-Couette cell

Credit: Chirag Kalelkar, Sanket Mandal

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60- Coalescence of air bubbles in 0.5% polyacrylamide solution

Credit: Chirag Kalelkar, Sagnik Paul

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61- Water bridge using coconut oil, isopropanol and dyed water

Credit: Chirag Kalelkar, Sagnik Paul

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62- Vortex ring through a sharply stratified fluid (water-dyed brine)

Credit: Chirag Kalelkar, Sagnik Paul

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63- Air bubble injecting a jet into another bubble

Credit: Chirag Kalelkar, Sagnik Paul

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64- Mixing in low-Reynolds number flows (ink droplets on glycerol layer)

Credit: Chirag Kalelkar

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65- Collapse of dyed antibubbles in a soap solution

Credit: Chirag Kalelkar, Sagnik Paul

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66- Instability of a viscous fluid thread (dyed corn syrup in water)

Credit: Chirag Kalelkar, Sagnik Paul

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67- Rayleigh-Taylor plume arising out of a vortex ring (dyed liquor ammonia)

Credit: Chirag Kalelkar, Sagnik Paul

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68- Rope coiling of viscous DC200 silicone oil

Credit: Chirag Kalelkar, Sagnik Paul

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69- Marangoni flows of oleic acid-ethanol drop (with ink) into water

Credit: Chirag Kalelkar, Sagnik Paul

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70- Drop of dyed vinegar on coconut oil-vinegar interface

Credit: Chirag Kalelkar, Sagnik Paul

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71- Pull-out of a sphere from water

Credit: Chirag Kalelkar, Sagnik Paul

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72- Rayleigh-Plateau instability on nylon fiber dipped in silicone oil

Credit: Chirag Kalelkar, Sagnik Paul

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73- Rayleigh-Plateau instability on rotating sphere in glycerol-water mixture

Credit: Chirag Kalelkar, Sagnik Paul

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74- Balloon collapsing underwater at 2448 fps

Credit: Chirag Kalelkar, Sagnik Paul

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75- Formation of a water bell on a flat obstacle

Credit: Chirag Kalelkar, Sagnik Paul

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76- Water droplet rolling on hydrophobic surface (glass coated with camphor smoke)

Credit: Chirag Kalelkar, Sagnik Paul

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77- Collision of droplets (corn syrup-water mixture)

Credit: Chirag Kalelkar, Sagnik Paul

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78- Explosion of water droplet on surface of boiling olive oil

Credit: Chirag Kalelkar, Sagnik Paul

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79- Flow attachment of a jet to a nearby surface (Coanda effect)

Credit: Chirag Kalelkar, Sagnik Paul

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80- Soap film as an analog computer: Steiner Tree problem

Credit: Chirag Kalelkar, Sagnik Paul

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81- Meandering rivulets using 0.5% surfactant-water mixture

Credit: Chirag Kalelkar, Sagnik Paul

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82- Half-ring vortex on the surface of water

Credit: Chirag Kalelkar, Sagnik Paul, Sukrut Phansalkar

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83- Smoke-wire flow visualisation around a cylinder

Credit: Chirag Kalelkar, Sagnik Paul, Sukrut Phansalkar

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84- Leidenfrost effect with acetone droplets

Credit: Chirag Kalelkar, Sagnik Paul, Sukrut Phansalkar

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85- Vortex tube formation using magnetic stirrer

Credit: Chirag Kalelkar, Sukrut Phansalkar

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86- No-slip boundary condition (glycerol-water mixture in pitted bottle)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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87- Jet of soap solution bouncing off a soap film

Credit: Chirag Kalelkar, Sukrut Phansalkar

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88- Lift on a spinning cylinder (Magnus effect)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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89- Marangoni effect by shadowgraph (“Tears of wine”, 20% ethanol in water)

Credit: Chirag Kalelkar, Abhijeet Kant Sinha

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90- Buoyancy of aqueous foam in sesame oil

Credit: Chirag Kalelkar, Sukrut Phansalkar

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91-Basket splash of roughened sphere impacting water at 3300 fps

Credit: Chirag Kalelkar, Sukrut Phansalkar

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92-Liquid marble: Water globule bouncing off a water surface

Credit: Chirag Kalelkar, Sukrut Phansalkar

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93-Water-Oil-Water vesicle with castor oil and dyed salt-water mixture

Credit: Chirag Kalelkar, Patruni Kiran

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94-Formation of oil-water emulsion using magnetic stirrer

Credit: Chirag Kalelkar

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95-Marangoni effect with Duco cement (nitrocellulose in acetone) on water

Credit: Chirag Kalelkar

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96-Karman vortex street from a submerged jet (aqueous corn syrup) in rectangular channel

Credit: Chirag Kalelkar

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97-Recirculating vortices from a submerged jet (aqueous corn syrup) in rectangular channel

Credit: Chirag Kalelkar, Sukrut Phansalkar

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98-Self-healing of a soap film upon rupture

Credit: Chirag Kalelkar, Sukrut Phansalkar

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99-Elastic rebound of a sphere from a shallow liquid layer

Credit: Chirag Kalelkar, Sukrut Phansalkar

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100-Periodic folding of a liquid sheet (cake batter)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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101-Oblique collision of water jets (fluid fish-bones)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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102-Oblique collision of glycerol-water jets (fluid chain)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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103-Breakup of an anti-bubble in a soap solution

Credit: Chirag Kalelkar, Sukrut Phansalkar

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104-Formation of an air:oil:water balloon using paraffin oil

Credit: Chirag Kalelkar, Sukrut Phansalkar

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105-Resonance in a water-filled Tibetan singing bowl

Credit: Chirag Kalelkar, Sukrut Phansalkar

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106-Crystallization in supersaturated solution of sodium acetate trihydrate

Credit: Chirag Kalelkar, Sukrut Phansalkar

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107-Formation of an air:water:oil balloon using paraffin oil

Credit: Chirag Kalelkar, Sukrut Phansalkar

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108-Taylor bubble rising in a tube

Credit: Chirag Kalelkar, Sukrut Phansalkar, Abhijeet Sinha

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109-Droplet impact on (porous) pumice stone

Credit: Chirag Kalelkar, Sukrut Phansalkar

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110- Pinch off and deformation of an antibubble in vortex flow

Credit: Chirag Kalelkar, Sukrut Phansalkar

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111- Drainage in a vertical soap film

Credit: Chirag Kalelkar, Akshita Sahni

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112- Air extraction from a Saponin bubble

Credit: Chirag Kalelkar, Akshita Sahni, Sukrut Phansalkar

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113- Capillary waves on water under a bursting soap bubble

Credit: Chirag Kalelkar, Akshita Sahni, Sukrut Phansalkar

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114- Expansion of a vortex ring approaching a plane wall

Credit: Chirag Kalelkar

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115- Coarsening of oil droplets in an oleic acid (oil red)-ethanol emulsion

Credit: Chirag Kalelkar, Sukrut Phansalkar

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116- Reduction of surface tension with increase of temperature (Fullers earth on silicone oil)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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117- Advancing and receding contact angle (vinegar droplet on plexiglas)

Credit: Chirag Kalelkar, Sagnik Paul

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118- Cellular structure of shaving foam under a microscope

Credit: Chirag Kalelkar, Sagnik Paul

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119- Droplet impact on clay (Fuller’s earth)

Credit: Chirag Kalelkar, Sukrut Phansalkar

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120- Pinning of contact lines under floating bodies

Credit: Chirag Kalelkar, Sagnik Paul

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121- Dewetting of dyed corn syrup on plexiglass

Credit: Chirag Kalelkar, Akshita Sahni

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122- Radial expansion of sheet of oil-water emulsion

Credit: Chirag Kalelkar, Akshita Sahni

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123- Radial expansion of sheet of water

Credit: Chirag Kalelkar, Akshita Sahni

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124- Radial expansion of sheet of dilute polyacrylamide

Credit: Chirag Kalelkar, Sukrut Phansalkar

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125- Stiffening of surfactant-water jet plunging into a bath

Credit: Chirag Kalelkar, Akshita Sahni

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126- Rayleigh-Taylor instability with silicone oil

Credit: Chirag Kalelkar, Akshita Sahni, Sagnik Paul

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127- Coffee-ring effect on filter paper (video speed:25X)

Credit: Chirag Kalelkar

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128- Kaye effect using shower gel

Credit: Chirag Kalelkar, Akshita Sahni

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129- Ballooning of water-corn syrup droplet, falling onto vertical jet of air

Credit: Chirag Kalelkar, Akshita Sahni

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130- Annular jet of water-corn syrup with anti-bubbles

Credit: Chirag Kalelkar, Akshita Sahni

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131- High-speed water jet entering corn syrup

Credit: Chirag Kalelkar, Sukrut Phansalkar

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132- Bubble-raft under compression and as a model for crystalline defects

Credit: Chirag Kalelkar, Sukrut Phansalkar

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133- Formation of vortex dipoles in a vibrating soap film

Credit: Chirag Kalelkar, Akshita Sahni

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134- Foam drainage around an obstacle in a foam cell

Credit: Chirag Kalelkar, Akshita Sahni

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135- Silicone oil droplet bouncing on a vibrating pool of same liquid

Credit: Chirag Kalelkar, Kratika Shrivastava, Kabita Naik

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136- Salt oscillator with saturated copper sulphate solution

Credit: Chirag Kalelkar, Sukrut Phansalkar

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137- Spitting droplets of ethanediol+acetone heated by a hair dryer

Credit: Chirag Kalelkar, Sukrut Phansalkar

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138- Formation of vortex sheet for jet (dyed aqueous copper sulphate) into water

Credit: Chirag Kalelkar, Sukrut Phansalkar

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139- High-speed rotation of a soap bubble using a drill

Credit: Chirag Kalelkar, Sagnik Paul

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140- Transition to turbulence in a smoke jet

Credit: Chirag Kalelkar, Akshita Sahni

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141- Turbulent wake behind a sphere with a smoke jet

Credit: Chirag Kalelkar, Bigyansu Behera

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142- Turbulent wake behind a grid with a smoke jet

Credit: Chirag Kalelkar, Bigyansu Behera

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143- Disintegration of a burning incense stick via capillary action of water

Credit: Chirag Kalelkar, Bigyansu Behera, Aditi Kambli

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144- Blowing a (half) bubble of water

Credit: Chirag Kalelkar, Bigyansu Behera, Aditi Kambli

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