1.An expression of Newton's second law that relates forces, displacements, and their derivatives for a mechanical system. 2.For the respiratory system, an equation that relates the forces involved in breathing to the displacements they produce. Typically, pressure differences are used to represent ...
At the left edge, the density is relatively low and the velocity is relatively low, causing a small inflow of fluid. The x-derivative of ρvx is positive. This is the crucial contribution to ∇ * (ρv); the other two contributions vanish in this example. We have a net outflow of ...
When the momentum equation is used to calculate the resultant force of the fluid on the object, the pressure at the inlet and outlet should be ( ) A absolute pressure B gage pressure C Atmospheric pressure D vacuum pressure 相关知识点: ...
百度试题 结果1 题目 In the momentum equation, for steady flow the net force on the fluid mass is equal to the net rate of outflow of momentum across the control surface. ()A.对B.错 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
In the second step, a wall is mounted to obstruct the flow and the normal force experienced by the wall is measured. Then a set of equations based on depth-averaged momentum conservation, making it possible to derive the time-varying force on the wall, is described. The model was proposed...
aThe conservation of momentum in an inertial (non-accelerating) reference frame may be described by equation (10). In this equation, P is the static pressure, s is the stress tensor (described by equation (11)), and and . are the gravitational body force and external body forces, respectiv...
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The Liouville Equation is defined as an equation of motion for the N-body distribution function in phase space, describing the probability of finding a system of interacting particles at a specific point at a specific time. AI generated definition based on: The Langevin and Generalised Langevin Ap...
0-D, 1-D, 2-D, and 3-D models are available for single- and two-phase flow that use either time averaging or combined space-time averaging. Each approach uses a set of balance equations for mass, momentum, and energy, and the derivation of these equations may need complex mathematical...
Consider, for example, the Euler wobble (eqn [16]). During the wobble, both the figure and the rotation axis have to change their orientation in inertial space; otherwise, the planet's spin angular momentum (which is defined in terms of the inertia and rotation of the planet; see eqn [...