نتایج جستجو برای: cattaneo christov heat flux

تعداد نتایج: 279215  

Journal: :European Physical Journal Plus 2021

Modern functional nanomaterials coating processes feature an increasing range of intelligent properties including rheology, biological (bio-inspired) modifications, elaborate thermophysical behaviour and complex chemical reactions which are needed for the precise synthesis bespoke designs. Such manufacturing flow extremely involve both heat multiple mass transfer (species diffusion) phenomena. ...

In this paper, a three-dimensional finite element model has been developed to simulate the laser-TIG hybrid welding (HLAW) of stainless steel 1.4418 with thickness of 4 mm. Transient temperature profile and dimensions of the fusion zone and heat affected zone (HAZ) during welding process are calculatedusing finite element method (FEM) and were solved in the ABAQUS/Standard software.The heat sou...

2010
Eric C. Cyr Scott Collis

We introduce the nonlocal Cattaneo-Vernotte equation by including a relaxation effect in the nonlocal diffusion equation, both of which are models for anomalous diffusion. This equation has two different interpretations: as a generalization of Fick’s first law in terms of a nonlocal flux and memory kernel and as an equation arising from the generalized master equation for a continuous time rand...

Farshad Kowsari Seyyed Morteza Azimi

In this paper the optimal control of boundary heat flux in a 2-D solid body with an arbitrary shape is performed in order to achieve the desired temperature distribution at a given time interval. The boundary of the body is subdivided into a number of components. On each component a time-dependent heat flux is applied which is independent of the others. Since the thermophysical properties are t...

Journal: :international journal of advanced design and manufacturing technology 0
mohsen dashti ardakani seyd mohammad mehdi mizanadl

abstract: in this paper, a new population-based search called the bees algorithm (ba) is presented to estimate the time-dependent heat transfer coefficient and the corresponding heat flux at the boundaries of a two-dimensional body subjected to transient heat conduction, using the temperature measurements at discrete nodal locations on the boundaries, where heat flux is specified as the boundar...

Journal: :energy equipment and systems 2013
farzad bazdidi-tehrani; h. foroutan; m. rajabi-zargarabadi

the present article focuses on the evaluation of a first-moment closure model applicable to film cooling flow and heat transfer computations. the present first-moment closure model consists of a higher level of turbulent heat flux modeling in which two additional transport equations for temperature variance kθ and its dissipation rate εθ are considered. it not only employs a time scale that is ...

Journal: :نشریه دانشکده فنی 0
فرشاد کوثری دانشگاه تهران سیدمرتضی عظیمی دانشگاه تهران

in this paper the optimal control of boundary heat flux in a 2-d solid body with an arbitrary shape is performed in order to achieve the desired temperature distribution at a given time interval. the boundary of the body is subdivided into a number of components. on each component a time-dependent heat flux is applied which is independent of the others. since the thermophysical properties are t...

Journal: :Journal of engineering and thermal sciences 2022

The current paper is dealing with the thermal reaction and response of skin tissue subjected to a constant heat flux due thermo-electrical shock on bounding plane. dual-phase-lag bio conduction equation based Tzou model has been applied solved in Laplace transform domain by using direct method. numerical inversions transform, solution obtained. thermos-electrical for small value time considered...

Journal: :International journal of applied thermodynamics 2023

The paper discusses the solution of an interior-boundary value problem one-dimensional time-fractional Cattaneo-type heat conduction and its stress fields for a rigid ball. interior describes dependence boundary conditions within ball's inner plane at any instant with prescribed temperature state, in contrast to exterior problem, which relates known surface conditions. A single-phase-lag equati...

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