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Flow Visualisation

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Published in: Physics
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Introduction to Aeronautics flow visualization is an experimental means of examining the flow pattern around a body or over its surface and flow visualisation techniques

Gaurav / Kota

2 years of teaching experience

Qualification: B.Tech.

Teaches: Mathematics, Physics

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  1. Flow visualization And Methods of flow visualization
  2. Flow Visualisation Q What is flow visualization? flow visualization is an experimental means of examining the flow pattern around a body or over its surface. Q What is need of examining flow pattern? Flow pattern determines effect of air over body.
  3. Methods of flow visualization Gas flows — Smoke visualization — Particle Liquid flows — Dye — Particles — Bubbles — Fluorescence, phosphorescence
  4. Some gas flow visualization images Smoke visualization Top- flow past airfoil Side- laminar smoke je
  5. uonez!Iens!A 9Åp— M0198 uonez!lens!/\ 913!V2d— 9P!S ? ? ? ? 9AO MOB SMOIJ P!nb!l
  6. Measurement in Flows Velocity — Conventional methods Pitot tubes Hotwire anemometers — Local steady state measurements Orifice Meter — Non intrusive methods Laser Doppler Velocimetry Particle Image Velocimetry Particle Tracking Velocimetry
  7. Orifice meter for velocity in pipes Streamlines Statt taps (several, equally spaced circu mfere nce) Stagnation point Pitot Static tube Differential manometer Pressure Datum Courtesy of Superior Products, Inc. www.orificeplates.com 1 mm (.50) Hot Film mm (.28) Hot W're 3B mm (1,501 3 2 mm (,125) Dia Differential pressure Differential gressure 6 mm (18) [Ja. Hot wire Anemometer
  8. — Pressure — Pressure anauø transducers Sensitive Paints M 2.0, 140 Pressure Sensitive Paint saves money by saving time. Pioneer Rocketplane IXI SWT M = 2.0, AOA = oo
  9. •Temperature —Thermistor probes — Change in resistance with temperature
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