نتایج جستجو برای: ideal flow

تعداد نتایج: 564338  

Journal: :Circulation 1964
R S ROSS J M CRILEY

THE contraction of the cardiac muscle is responsible for the movement of blood within the heart, alterations in the shape of the heart, and the movement of the heart within the chest. The cardiac physical signs are related to one or more of these consequences of the contraction and relaxation of cardiac muscle. Cardiac catheterization provides information about the pressures within the heart, a...

2008
ANDREW MACFADYEN

Geometrical shock dynamics, also called CCW theory, yields approximate equations for shock propagation in which only the conditions at the shock appear explicitly; the postshock flow is presumed approximately uniform and enters implicitly via a Riemann invariant. The nonrelativistic theory, formulated by G. B. Whitham and others, matches many experimental results surprisingly well. Motivated by...

2004
FARZAN RASHIDI

High levels of measurement noise, nonlinear and non minimum phase, and conflicting performance requirements pose challenging problems for improving heat transfer efficiency and flow control in HVAC systems. This paper extends the theoretical development of the Energy Delivery Efficiency (EDE) concept to include supply air latent effects and economizer operation, defines how ideal HVAC systems s...

Journal: :J. Comput. Physics 2010
Svetlana Dubinkina Jason Frank

We conduct long-time simulations with a Hamiltonian particle-mesh method for ideal fluid flow, to determine the statistical mean vorticity field of the discretization. Lagrangian and Eulerian statistical models are proposed for the discrete dynamics, and these are compared against numerical experiments. The observed results are in excellent agreement with the theoretical models, as well as with...

Dynamic modeling and simulation of fixed bed adsorption process was carried out by explaining the behavior of breakthrough curve parameter. Adsorption of sulfur compound, present in road fuel, has posed a great challenge. A model of fixed bed adsorption of benzothiophene from fuel was formulated with non-ideal plug flow behavior and considered velocity variation along a column. The model was so...

2009
M. A. Garratt Lambert T. Guillemette

A small embedded vision sensor has been developed using Field Programmable Gate Arrays (FPGA) technology. The sensor computes optic flow using a streaming version of the image interpolation algorithm to provide flow vectors at 36 equally spaced locations in a 1024×768 pixel image. The sensor has been tested in flight on an unmanned helicopter and benchmarked against GPS measurements of velocity...

Journal: :Journal of vacuum science & technology 2021

We have developed a simulation tool to model self-limited processes such as atomic layer deposition (ALD) and etching inside reactors of arbitrary geometry well the output in situ quartz crystal microbalance mass spectrometry. applied this two standard types cross-flow reactors: cylindrical tube reactor 300 mm wafer reactor, explored both ideal nonideal kinetics. The results are agreement with ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Phanindra Tallapragada Shane D Ross

It is a commonly observed phenomenon that spherical particles with inertia in an incompressible fluid do not behave as ideal tracers. Due to the inertia of the particle, the planar dynamics are described in a four-dimensional phase space and thus can differ considerably from the ideal tracer dynamics. Using finite-time Lyapunov exponents, we compute the sensitivity of the final position of a pa...

Journal: :SIAM J. Math. Analysis 2012
Olivier Glass Franck Sueur

We consider the motion of a rigid body immersed in an ideal flow occupying the plane, with bounded initial vorticity. In that case there exists a unique corresponding solution which is global in time, in the spirit of the famous work by Yudovich for the fluid alone. We prove that if the body’s boundary is Gevrey then the body’s trajectory is Gevrey. This extends the previous work [5] to a case ...

A C *-algebra A is called an ideal C * -algebra (or equally a dual algebra) if it is an ideal in its bidual A**. M.C.F. Berglund proved that subalgebras and quotients of ideal C*-algebras are also ideal C*-algebras, that a commutative C *-algebra A is an ideal C *-algebra if and only if it is isomorphicto C (Q) for some discrete space ?. We investigate ideal J*-algebras and show that the a...

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