نتایج جستجو برای: thermal flow

تعداد نتایج: 683554  

ژورنال: مجله دندانپزشکی 2002
باجلان, حمید , منزوی, عباس , میرمحمد رضایی, سوسن ,

Waxes have a lot of applications in dentistry. Such materials are of thermoplastic type that undergoes deformation in different temperatures. Two important properties of base plate waxes are flow and their coefficient of linear thermal expansion. Recently, different institutions, inside the country, produce dentistry waxes, while they have not been standardized. Consequently, consumers' dissati...

Analysis of the drilling fluid temperature due to heat transfer of drilling fluid with the formation in under-balanced drilling operation is the main objective of this study. Gas-liquid two-phase flow model considering thermal interaction with the formation is used to numerically simulate a well with real dimensions. In the present study, the continuity, momentum, and energy equations are devel...

Journal: :Integration 2013
Hanhua Qian Chip-Hong Chang Hao Yu

Heat removal problem has been a bane of three dimensional integrated circuits (3DICs). Comparing with other passive cooling techniques, microfluidic cooling appears to be an ideal cooling solution due to its high thermal conductivity and scalability. Without regarding to the fact of non-uniform power distribution of integrated circuits, existing microfluidic cooling with uniform cooling effort ...

Hooman Naimi Mehrdad Raisee

The present paper deals with the prediction of three-dimensional fluid flow and heat transfer in rib-roughened ducts of square cross-section. Such flows are of direct relevance to the internal cooling system of modern gas turbine blades. The main objective is to assess how a recently developed variant of a cubic non-linear model (proposed by Craft et al. (1999)), that has been shown to produce ...

2010
Vai Kuong Sin

Non-isothermal stagnation-point flow with consideration of thermal radiation is studied numerically. A set of partial differential equations that governing the fluid flow and energy is converted into a set of ordinary differential equations which is solved by Runge-Kutta method with shooting algorithm. Dimensionless wall temperature gradient and temperature boundary layer thickness for differen...

Journal: :Micromachines 2012
Jonathan T. W. Kuo Lawrence Yu Ellis Meng

Microfabrication has greatly matured and proliferated in use amongst many disciplines. There has been great interest in micromachined flow sensors due to the benefits of miniaturization: low cost, small device footprint, low power consumption, greater sensitivity, integration with on-chip circuitry, etc. This paper reviews the theory of thermal flow sensing and the different configurations and ...

2013
Nan Tu Jinjia Wei Jiabin Fang

An experimental platform was designed and built for testing the thermal performance of a water/steam cavity receiver. The experimental platform was utilized to investigate the start-up performance and operation characteristics of the receiver. The electrical heating mode was chosen to simulate the non-uniform distribution of heat flux on the surface of absorber tubes inside the cavity. During s...

Journal: :Journal of animal science 1978
H Roman-Ponce W W Thatcher D Caton D H Barron C J Wilcox

Four muhiparous ovariectomized ewes, fitted with electromagnetic blood flow transducers around one mid-uterine artery, were utilized in two latin square design C.xperiments to evaluate interrelationships of thermal stress and epinephrine on an increase in uterine blood flow (UBF) induced by estradiol. Estradiol (20 /ag) was injected into the femoral vein and the subsequent induced increase in U...

Journal: :transport phenomena in nano and micro scales 2013
e. fattahi m. farhadi k. sedighi

this work presents a numerical analysis of entropy generation in γ-shaped enclosure that was submitted to the natural convection process using a simple thermal lattice boltzmann method (tlbm) with the boussinesq approximation.  a 2d thermal lattice boltzmann method with 9 velocities, d2q9, is used to solve the thermal flow problem. the simulations are performed at a constant prandtl number (pr ...

Journal: :journal of particle science & technology 2015
vahid madadi avargani amir rahimi touraj tavakoli gheinani

an experimental and theoretical energy and exergy analysis was conducted for a cylindrical cavity receiver employed in a parabolic dish collector. based on simultaneous energy and exergy analysis, the receiver average wall temperature and overall heat transfer coefficient were determined. a simplified nusselt number for heat transfer fluid (htf) through the receiver as a function of reynolds an...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید