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 generalized forces and volume changes are used to represent generalized displacements. The simplest equation of motion written ...
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 ...
EnglishEspañolDeutschFrançaisItalianoالعربية中文简体PolskiPortuguêsNederlandsNorskΕλληνικήРусскийTürkçeאנגלית 9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook ...
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 ...
If I have a constant body force f(fx fy 0) which has a dimension of force/volume/density. I want to add it to the momentum equation, So the first detail we need to keep in mind that the direct source term for the U equation has the units of Force already... I...
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...
342 It can be derived from momentum equation and equation of continuity, and further simplified using adiabatic ideal gas law. In a fluid, the rigid body equation of motion F=mdv/dt is differentiated with respect to volume, giving f=ρ Dv/Dt, where f is the force density and ρ is ...
This process releases energy from two particles that have mass (e.g., electron and positron) into photons. These photons may then be shot out at the back of the spaceship and accelerate the spaceship due to the conservation of momentum. If you want to know how much energy is contained in...
That is, the force acts in a direction opposite to the spatial change of potential, similar to an induced current in a coil producing a magnetic field to counter the temporal change of the magnetic field linking the coil. This is an act of conservation of energy; without the minus sign, ...