توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Two–Dimensional Hydrodynamic Analysis of Turbulent Flow in Journal Bearings
نویسنده(ها): ، ،
اطلاعات انتشار: دهمین کنفرانس دینامیک شاره ها، سال
تعداد صفحات: ۱۲
In this study, hydrodynamic characteristics of turbulent flow in journal bearings with infinite length is investigated. The analysis is based on the numerical solution of the full Navier–Stokes equations with the equations governing the kinetic energy of turbulence and the dissipation rate using CFD techniques. The AKN Low–Re k − ε turbulence model is used to simulate the mean turbulent flow field. Considering the complexity of the physical geometry, conformal mapping is used to generate an orthogonal grid and the governing equations are transformed in the computational domain. Discretized forms of the transformed equations are obtained by control volume method and solved by SIMPLE algorithm. The numerical results of this analysis can be used to investigate the oil flow pattern in the journal bearings. To validate the computational results, comparison with the experimental data of other investigators is made, and reasonable agreement is found.<\div>

۲NUMERICAL ANALYSIS OF TURBULENT HEAT TRANSFER، PRESSURE DROP AND EFFECTIVENESS IN ANNULAR WATER HEATERS
نویسنده(ها): ،
اطلاعات انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۹
Numerical analysis using RNG – model were performed to determine average heat transfer coefficient and friction factors for turbulent flow
through annular heat exchangers with longitudinal rectangular fins. In addition the heat exchanger effectiveness was determined by changing the
number of the fins attached to channel. The effect of three different fin angles on the performance of the heat exchanger was analyzed. The working fluids were air as hot gas and water as cold fluid. The pumping powers produced in the water channel were determined under the variation of the water channel radius. The results are presented in the dimensionless forms. An experimental case has been used for code assessment. All fluid properties are considered temperature dependent<\div>
نمایش نتایج ۱ تا ۲ از میان ۲ نتیجه