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1篇 您的检索式：作者名="H.A.Khalaf"

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		题名	作者	年代	出处	被引量
	1	Bifurcation phenomena and control for magnetohydrodynamic flows in a smooth expanded channel显示文摘This work reports the effects of magnetic field on an electrically conducting fluid with low electrical conductivity flowing in a smooth expanded channel. The governing nonlinear magnetohydrodynamic(MHD) equations in inductionfree situations are derived in the framework of MHD approximations and solved numerically using the finite-difference technique. The critical values of Reynolds number(based on upstream mean velocity and channel height) for symmetry breaking bifurcation for a sudden expansion channel(1:4) is about 36, whereas the value in the case of the smooth expansion geometry used in this work is obtained as 298, approximately(non-magnetic case). The flow of an electrically conducting fluid in the presence of an externally applied constant magnetic field perpendicular to the plane of the flow is reduced significantly depending on the magnetic parameter(M). It is found that the critical value of Reynolds number for smooth expansion(1:4) is about 475 for the magnetic parameter M = 2. The separating regions developed behind the smooth symmetric expansion are decreased in length for increasing values of the magnetic parameter. The bifurcation diagram is shown for a symmetric smoothly expanding channel. It is noted that the critical values of Reynolds number increase with increasing magnetic field strength.	G.C.Layek Mani Shankar Mandal H.A.Khalaf	2014	Chinese Physics B2014，23，11：	0

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