A wind tunnel investigation was performed to study the flow field over a 70° swept sharped edge delta wing model at high angles of attack. The experiments were conducted in the subsonic wind tunnel at the Department of Mechanical Engineering, Sharif University of Technology. Velocity profiles have been measured using a special pitot tube and hot wire anemometer at angles of attacks of 10 to 35 ...

A theory was developed that explains energy separation in a vortex tube, known as one of the Maxwellian demons. It appears that there is a unique relation between the pressures in the exits of the vortex tube and its temperatures. Experimental results show that the computed and measured temperatures are in very good agreement.

A wind tunnel investigation was performed to study the flow field over a 70° swept sharped edge delta wing model at high angles of attack. The experiments were conducted in the subsonic wind tunnel at the Department of Mechanical Engineering, Sharif University of Technology. Velocity profiles have been measured using a special pitot tube and hot wire anemometer at angles of attacks of 10 to 35 ...

Very reliable methods have been developed to extract RNA from different tissues and cell lines (1, 2, 3). RNA preparation, however, is still cumbersome and time consuming, especially when extracting a large number of cells (>10) and cell samples. The isolation of RNA from leucocytic cells is particularly difficult for three reasons: a) high levels of endogenous RNase; b) low amount of RNA (RNA/...

The importance of renewable energy sources for the electrical power supply has grown rapidly in the past decades. Their often unpredictable nature however poses a threat to the stability of the existing electric grid. Hydroelectric powerplants play an important role in regulating the integration of renewable energy sources into the network by supplying on-demand load balancing as well as primar...

Abstract We propose criteria of tracking vortex surfaces in complex flows based on the vortex-surface field (VSF). The characterize accuracy and Lagrangian performance numerical VSF solution, determine time period when surface is satisfactory. Moreover, we develop a turbulent-like flow combining large-scale coherent structures Taylor–Green small-scale turbulent homogeneous isotropic turbulence ...