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KRITI KAPOOR INDIAN INSTITUTE OF TECHNOLOGY BOMBAY TUTOR: PROF. FRANZ DURST Outline Fluid flow measurements: pitot tubes, HWA, LDA Introduction to LDA: Doppler and fringe model Optical system set up Electronic systems Applications of LDA Limitations of LDA 2 LASER DOPPLER ANEMOMETRY Fluid Flow Measurements Using Pitot Tubes Uses the concept of Bernoulli’s equation Other techniques using pressure difference: Venturi tube, Rotameter, Flow nozzles, Orifice plate etc. 3 LASER DOPPLER
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  KRITI KAPOOR INDIAN INSTITUTE OF TECHNOLOGY BOMBAYTUTOR: PROF. FRANZ DURST  Outline  Fluid flow measurements: pitot tubes, HWA, LDA  Introduction to LDA: Doppler and fringe model  Optical system set up  Electronic systems  Applications of LDA  Limitations of LDA 2 LASER DOPPLER ANEMOMETRY  Fluid Flow Measurements Using Pitot Tubes  Uses the concept of Bernoulli’s equation  Other techniques using  pressure difference: Venturi tube, Rotameter, Flow nozzles, Orifice plate etc. 3 LASER DOPPLER ANEMOMETRY  Fluid Flow Measurements Hot Wire Anemometry  Measures the convective heat transfer occurring due to flowing fluid   Sensor having higher temperature Limitations  Indirect measurement  Dirt is deposited resulting in insulation  Disturbs the flow  Fluid may decompose due to high temperature LASER DOPPLER ANEMOMETRY 4
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