نتایج جستجو برای: convective thermal condition
تعداد نتایج: 540082 فیلتر نتایج به سال:
We present the first characteristics of air flow measurements in the mixed convective region with strong buoyancy effects (Gr/Re 1), using a thermal silicon double-Wheatstonebridge vector sensor. The Alternating Direction Method is applied to eliminate additive drift influences. The upper limit on the mixed convective region is experimentally defined to be given by Gr/Re = [0:3–0:8]. Flow veloc...
The simulation of nonlinear ultrasound propagation through tissue realistic media has a wide range of practical applications. However, this is a computationally difficult problem due to the large size of the computational domain compared to the acoustic wavelength. Here, the k-space pseudospectral method is used to reduce the number of grid points required per wavelength for accurate simulation...
This paper describes a finite element formulation designed to simulate polymer melt flows in which both conductive and convective heat transfer may be important, and illustrates the numerical model by means of computer experiments using extruder drag flow and entry flow as trial problems. Fluid incompressibility is enforced by a penalty treatment of the element pressures, and the thermal convec...
PURPOSE We report 2-year outcomes of a multicenter randomized controlled trial plus 1-year results of a crossover trial after treatment with convective radiofrequency water vapor thermal energy for lower urinary tract symptoms due to benign prostatic hyperplasia. MATERIALS AND METHODS A total of 197 men at least 50 years old with I-PSS (International Prostate Symptom Score) 13 or greater, max...
In the work, specified features of temperature regime in drying chamber showed that when coolant moves chamber, both and humidity air rate product change, is almost proportional to increase humidity. Based on studies carried out, simplifications were obtained describing process, which makes it possible more reasonably carry out engineering calculations design dryer, particular, set input output...
This paper studies the reaction of low-mass stars to anisotropic irradiation and its implications for the long-term evolution of compact binaries (cataclysmic variables and lowmass X-ray binaries). First, we show by means of simple homology considerations that if the energy outflow through the surface layers of a lowmass main sequence star is blocked over a fraction seff < 1 of its surface (e.g...
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