..., helium, and tetrafluoroethane (R134a) are investigated, as these gases provide a wide range of physical and thermodynamic properties. Simulated results match the trends of experimental data well and allow good qualitative analysis. The results also show that using detected pulse width information...

...Michael A. Delichatsios; C. P. Brescianini; D. Paterson; H. Y. Wang; J. M. Most Computational fluid dynamics based on Reynolds averaged Navier–Stokes equations is used to model a turbulent planar buoyant adiabatic wall plume. The plume is generated by directing a helium/air source upwards...

.... Diffuse effects were observed near the interface of the two segments, where the flow upstream the interface can be either heated or cooled by the flow downstream depending on their temperature difference. In addition, the effect of the gas species was investigated by conducting the simulation using helium...

.... 10 07 2003 10 08 2005 helium nitrogen carbon compounds sulphur compounds nozzles confined flow computational fluid dynamics specific heat 1 2 Critical flow ventruis (CFVs), also called critical nozzles, have been used for decades as secondary standards for measuring...

...Antonio Campo; Salah Chikh; Shyam S. Sablani With the goal of intensifying turbulent free convection from heated vertical plates to cold gases, five binary gas mixtures are examined in this technical note. Helium (He) is chosen as the principal gas while xenon (Xe), nitrogen ( N 2 ) , oxygen ( O 2...