نتایج جستجو برای: convective straight fin

تعداد نتایج: 56354  

Journal: :iranian journal of fisheries science 0
m.r. anizah c.r. saad m.s. kamarudin a.a. rahim

a series of two experiments was conducted to study the optimum dietary protein level and protein to energy ratio of lemon fin barb hybrid larvae. in experiment 1, five isocaloric diets (4700 kcal per kg) ranging from 40 to 60% protein in 5% increments were fed to triplicate groups of lemon fin barb hybrid larvae (initial weight: 0.10 ± 0.01 mg per fish) for 21 days. weight gain of fish was prop...

Journal: :Journal of Thermal Engineering 2022

In this research study, the transient study of heat transfer through a convective-radiative porous fin is carried out considering temperature-dependent thermal conductivity and internal generation. The unsteady Galerkin weighted residuals technique employed to obtain temperatures fin. results indicate that increasing base temperature, generation and, lead increase along consequently higher temp...

Journal: :Energies 2022

In this paper, we analyze the values of entropic efficiency longitudinal fins by investigating coupling between function describing fin profile and corresponding steady-state temperature distribution along fin. By starting from different boundary conditions, look at maximizing From requesting that must comply with natural physical constraints, such as maximum thickness, obtain an optimal for a ...

Journal: :Computer methods in biomechanics and biomedical engineering 2007
Giuseppe Pontrelli Amabile Tatone

Mass transport and diffusion phenomena in the arterial lumen are studied through a mathematical model. Blood flow is described by the unsteady Navier-Stokes equation and solute dynamics by an advection-diffusion equation, the convective field being provided by the fluid velocity. A linearization procedure over the steady state solution is carried out and an asymptotic analysis is used to study ...

Journal: :Physical review letters 2008
Gilad Yossifon Hsueh-Chia Chang

The ion flux dynamics across a straight nanoslot is imaged to understand the nonequilibrium phenomenon of overlimiting current density across a nanoporous membrane. With a slow ac field, an ion-depletion front is generated intermittently from one end of the nanochannel, and a vortex instability first predicted by Rubinstein, Staude, and Kedem [Desalination 69, 101 (1988).10.1016/0011-9164(88)80...

2008
H. M. BLACKBURN S. J. SHERWIN D. BARKLEY H. M. Blackburn S. J. Sherwin D. Barkley

We show that suitable initial disturbances to steady or long-period pulsatile flows in a straight tube with an axisymmetric 75%-occlusion stenosis can produce very large transient energy growths. The global optimal disturbances to an initially axisymmetric state found by linear analyses are three-dimensional wave packets that produce localized sinuous convective instability in extended shear la...

2006
Thilo Brenner Thomas Glatzel Roland Zengerle

We demonstrate how the speed of mixing under laminar conditions can be appreciably enhanced in concurrent centrifugal flows through straight, low-aspect-ratio microchannels pointing in radial direction in the plane of rotation. The convective mixing is driven by the inhomogeneous distribution of the velocity-dependent Coriolis pseudo force and the interaction of the soinduced transverse current...

Journal: :AL Rafdain Engineering Journal 2023

The current work explores a trial forced convective heat move from rectangular blades on an upward surface at low Reynolds numbers. removal for proper number of punctured and non-punctured fins, fin dividing, length was estimated in air stream fluctuating inlet speed some way or another info power somewhere the range 20W 70W. characteristics are investigated rectangular, circular, V-shape perfo...

Due to increasing applications of extended surfaces as passive methods of cooling, study of thermal behaviors and development of mathematical solutions to nonlinear thermal models of extended surfaces have been the subjects of research in cooling technology over the years. In the thermal analysis of fin, various methods have been applied to solve the nonlinear thermal models. This paper focuses...

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