Pulsating Flows : Experimental Equipment and Its Application(<Special Issue>Jets, Wakes and Separated Flows)

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概要

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• Investigations of time-dependent laminar and transitional flows need accurate and reproducible generation of the flow as a function of time. For this purpose, an electronically controlled air valve, with which the mass flow rate is controlled, was designed and built. The working principle and lay-out of the valve are explained and the performance of the valve is demonstrated. It was found that with the present equipment one can study any non-periodic and periodic flow and the flow can be adjusted to be laminar, transitional and turbulent. The investigations on laminar and transitional time-dependent flows are reported. Laminar flow investigations showed that the generated sinusoidal mass flow rates agree well with that of analytical solution. Non-periodic transient and periodic sinusoidal pulsatile transitional flows were investigated. It was shown that elucidation of the transition in non-periodic transient flows may help in understanding the transition in periodic flows.

• 一般社団法人日本機械学会の論文
• 2006-11-15

著者

• Durst Franz

  Lehrstuhl Fur Stromungsmechanik (lstm) Technische Fakultat Friedrich-alexander-universitat Erlangen-

• Unsal Bulent

  Lehrstuhl fur Stromungsmechanik (LSTM), Technische Fakultat, Friedrich-Alexander-Universitat Erlange

• Unsal Bulent

  Lehrstuhl Fur Stromungsmechanik (lstm) Technische Fakultat Friedrich-alexander-universitat Erlangen-

関連論文

• On-line Instantaneous Mass Flow Rate Measurements Through Injection Nozzles of Internal Combustion Engines(Measurement)
• Pulsating Flows : Experimental Equipment and its Application(Cavity Flow and Pulsating Flow)
• MEASUREMTENS OF FINE SCALE TURBULENCE PROPERTIES IN WAKE FLOWS(Keynote Lecture)
• Pulsating Flows : Experimental Equipment and Its Application(Jets, Wakes and Separated Flows)

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