Al-Falahi, Amir and Yusoff, M. Z. and Yusaf, T. (2007) Numerical and experimental study to evaluate the performance of Universiti Tenaga Nasional short duration hypersonic test facility. In: 16th Australasian Fluid Mechanics Conference (AFMC 2007), 3-7 Dec 2007, Gold Coast, Australia.
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The work of this paper is aimed to investigate the parameters that affect the performance of a short-duration hypersonic test facility that build at the Universiti Tenaga Nasional 'UNITEN' in Malaysia. The facility has been designed, constructed, and commissioned for different values of diaphragm pressure ratios and different gas combinations. The applications and reasoning behind building such a facility are explained. The governing equations for the shock wave are presented. A theoretical model was developed to evaluate the shock wave strength P2/P1 values as a function of diaphragm pressure ratio P4/P1 for different driver/driven gas combinations. A two-dimensional time-accurate time-marching Navier-Stokes solver for shock wave applications is described. It uses second-order accurate cell-vertex finite volume spatial discretization and fourth order accurate Runge- Kutta temporal integration. Experimental tests for different operating conditions have been accomplished. A high precision pressure transducer and an in house made thermocouple were used to measure the pressure history which represents the shock wave strength P2/P1 and the surface temperature change profile during the facility operation. A MATLAB numerical transient heat transfer model was developed to evaluate the heat flux from the surface temperature change history. The calculated parameters which are pressure, temperature and shock wave velocity, and the CFD results were found to be much matched comparable to the experimental results.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||No evidence of copyright restrictions.|
|Uncontrolled Keywords:||hypersonic testing; shock wave; theoretical; atmospheric temperature; diaphragms; fluid mechanics; heat flux; Runge Kutta methods; surface properties; test facilities; thermocouples|
|Subjects:||240000 Physical Sciences
230000 Mathematical Sciences
290000 Engineering and Technology
|Depositing User:||Dr Talal Yusaf|
|Date Deposited:||28 Feb 2008 04:26|
|Last Modified:||09 Dec 2013 02:43|
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