نتایج جستجو برای: sudden expansion flow

تعداد نتایج: 656821  

The lattice Boltzmann method (LBM) has recently become an alternative and promising computational fluid dynamics approach for simulating complex fluid flows. Despite its enormous success in many practical applications, the standard LBM is restricted to the lattice uniformity in the physical space. This is the main drawback of the standard LBM for flow problems with complex geometry. Several app...

Joule-Thomson cooling systems are used in refrigeration processes such as cryogenic gas liquefaction. Although extensive studies have been carried out by researchers, most of them include cryogenic heat exchangers and their associated fields. In the current study, an attempt was made to indicate the effect of using inappropriate operational conditions in a cryogenic Joule-Thomson cooling system...

Simulation of free surface flow and sudden wave profile are recognized as the most challenging problem in computational hydraulics. Several Eulerian/Lagrangian approaches and models can be implemented for simulating such phenomena in which the smoothed particle hydrodynamics method (SPH) is categorized as a proper candidate. The incompressible SPH (ISPH) method hires a precise incompressible hy...

Journal: :journal of the iranian chemical research 0
majid bazargan mechanical engineering department, k. n. toosi university of technology, mollasadra ave., tehran 1999143344, iran maryam akbari mechanical engineering department, k. n. toosi university of technology, mollasadra ave., tehran 1999143344, iran

supercritical water oxidation has attracted attention of many researchers ever since the ideahas emerged about three decades ago as a promising technique in the waste managementindustry. providing more details about the behavior of a supercritical water oxidation systemunder various operating conditions and extending available data can greatly assist more accurateand reliable design of such sys...

The vast biological and industrial applications of laminar flow of viscous fluid through a porous channel with contracting or expanding permeable wall have attest to the importance of studying the flow process. In this paper, two-dimensional flow of viscous fluid in a porous channel through slowly expanding or contracting walls with injection or suction is analyzed using variation parameter met...

Journal: :Geosciences 2021

This review paper compiles research related to debris flows and hyperconcentrated in the central Andes (30°–33° S), updating knowledge of these phenomena this semiarid region. Continuous records are lacking through Andean region; intense precipitations, sudden snowmelt, increased temperatures on high relief mountain areas, permafrost degradation violent flow discharges. Documented catastrophic ...

Majid Bazargan, Maryam Akbari

Supercritical water oxidation has attracted attention of many researchers ever since the ideahas emerged about three decades ago as a promising technique in the waste managementindustry. Providing more details about the behavior of a supercritical water oxidation systemunder various operating conditions and extending available data can greatly assist more accurateand reliable design of such sys...

Journal: :ERJ. Engineering Research Journal 2000

Journal: :PROCEEDINGS OF HYDRAULIC ENGINEERING 1990

امیری زاده, ناصر, حفیظی, مریم, سلیمانی, مسعود, فروزنده مقدم, مهدی, هاشمی, زهراالسادات,

Background: Bone Marrow Transplantations (BMT) are limited by low CD34+ cell counts in umbilical cord blood (UCB) and these cells need to be expanded for success in such procedures. To achieve this goal, ex vivo expansion of hematopoietic stem cells (HSCs) by enhancing their self-renewal activity on demineralized bone matrix (DBM) scaffold coated with mesenchymal progenitor cells (MPCs) and unr...

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