نتایج جستجو برای: مگنتوهیدرودینامیک mhd

تعداد نتایج: 9709  

2001
R. Erdélyi

Nonlinear resonant magnetohydrodynamic (MHD) waves are studied in weakly dissipative isotropic plasmas in cylindrical geometry. This geometry is suitable and is needed when one intends to study resonant MHD waves in magnetic flux tubes (e.g. for sunspots, coronal loops, solar plumes, solar wind, the magnetosphere, etc.) The resonant behaviour of slow MHD waves is confined in a narrow dissipativ...

2006
Cong Yu Yan Wu

We explore magnetohydrodynamic (MHD) solutions for envelope expansions with core collapse (EECC) with isothermal MHD shocks in a quasi-spherical symmetry and outline potential astrophysical applications of such magnetized shock flows. By including a random magnetic field in a gas medium, we further extend the recent isothermal shock results of Bian & Lou who have unified earlier similarity isot...

ژورنال: مهندسی مکانیک 2020

در این مقاله ابتدا توضیح مختصری از مفهوم کنترل جریان سیال و نحوه دسته‌بندی روش‌های مختلف آن داده شده است. در ادامه دو دسته مهم از عملگرهای کنترل جریانی مبتنی بر میدان‌های الکتریکی و مغناطیسی معرفی و نحوه عملکرد آن‌ها توسط نیروی لورنتس توضیح داده شده است. دسته اول که به عملگرهای الکتروهیدرودینامیک مشهور هستند، صرفا تحت تأثیر میدان  الکتریکی عمل می‌کنند. این عملگرها با استفاده از تخلیه الکتریکی و...

Journal: :Journal of applied physiology 2012
Michael I Lewis Mario Fournier Huiyuan Wang Thomas W Storer Richard Casaburi Arthur H Cohen Joel D Kopple

Muscle weakness and effort intolerance are common in maintenance hemodialysis (MHD) patients. This study characterized morphometric, histochemical, and biochemical properties of limb muscle in MHD patients compared with controls (CTL) with similar age, gender, and ethnicity. Vastus lateralis muscle biopsies were obtained from 60 MHD patients, 1 day after dialysis, and from 21 CTL. Muscle fiber ...

1992
James M. Stone John F. Hawley Charles R. Evans Michael L. Norman

We have drawn together in this paper a collection of magnetohydrodynamic (MHD) problems that will provide researchers who have interests in modeling MHD phenomena with a battery of tests (a \test suite") for calibrating their numerical algorithms. Use of these tests will provide a common reference for comparison of di erent numerical MHD algorithms. The test suite includes both one and two dime...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2011
G Flesch C Czendlik D Renard P Lloyd

Oxcarbazepine (OXC) is an antiepileptic drug. In humans, OXC is metabolized via reduction and conjugation. Monohydroxy derivative of OXC (MHD) is the major pharmacologically active component after OXC ingestion. This study was performed to characterize the disposition of the two enantiomers of MHD after oral and intravenous administration and to estimate the bioavailability of MHD after a singl...

In order to see the occurrence of magnetic reconnection in the solar chromosphere, we investigate the behavior of non-linear perturbations on the magneto hydro dynamic (MHD) equations. Numericalstudy of the resistive tearing instability in a current sheet is presented by considering the MHD framework.To do this, the four field model is applied. It is shown based on the simulation that the non-l...

2014
Hongdi Cao Hong Ye Zhiping Sun Xia Shen Zongwei Song Xiaochun Wu Weichun He Chunsun Dai Junwei Yang

Chronic inflammation is highly prevalent in maintenance hemodialysis (MHD) patients, and it has been shown to be a strong predictor of morbidity and mortality. Mitochondrial DNA (mtDNA) released into circulation after cell damage can promote inflammation in patients and animal models. However, the role and mechanisms of circulatory mtDNA in chronic inflammation in MHD patients remain unknown. S...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2013
m. gnaneswara reddy

this paper was concerned with studying the magnetohydrodynamic steady laminar free convection flow of a micropolar fluid past a continuously moving surface in the presence of heat generation and thermal radiation. similarity transformation was employed to transform the governing partial differential equations into ordinary ones, which were then solved numerically using the finite element method...

ژورنال: :مهندسی مکانیک مدرس 2014
رضا نوری مفید گرجی بندپی داوود دومیری گنجی

در این مقاله انتقال حرارت جابجایی در یک کانال سینوسی شکل حاوی نانوسیال تحت میدان مغناطیسی بررسی شده است. میدان مغناطیسی عمود بر کانال اعمال شده است. آب به عنوان سیال پایه در نظر گرفته شده است و نانو ذره مس به آن افزوده می شود. از مدل ماکسول-گرانت برای ضریب رسانش حرارتی و مدل برینکمن برای ویسکوزیته دینامیکی استفاده می شود. تغییر پارامترهایی نظیر اثر شکل هندسی ، درصد حجمی نانوسیال ،عدد بی بعد هار...

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