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  2. Pressure-correction method - Wikipedia

    en.wikipedia.org/wiki/Pressure-correction_method

    The pressure value that is attempted to compute, is such that when plugged into momentum equations a divergence-free velocity field results. The mass imbalance is often also used for control of the outer loop. The name of this class of methods stems from the fact that the correction of the velocity field is computed through the pressure-field.

  3. SIMPLE algorithm - Wikipedia

    en.wikipedia.org/wiki/SIMPLE_algorithm

    The basic steps in the solution update are as follows: Set the boundary conditions. Compute the gradients of velocity and pressure. Solve the discretized momentum equation to compute the intermediate velocity field. Compute the uncorrected mass fluxes at faces. Solve the pressure correction equation to produce cell values of the pressure ...

  4. Pressure gradient - Wikipedia

    en.wikipedia.org/wiki/Pressure_gradient

    The horizontal pressure gradient is a two-dimensional vector resulting from the projection of the pressure gradient onto a local horizontal plane. Near the Earth's surface, this horizontal pressure gradient force is directed from higher toward lower pressure. Its particular orientation at any one time and place depends strongly on the weather ...

  5. Corrected d-exponent - Wikipedia

    en.wikipedia.org/wiki/Corrected_d-exponent

    The Corrected d-exponent, also known as dc-exponent or cd-exponent, is a parameter used in mud logging and formation pore pressure analysis in the petroleum industry. It is an extrapolation of certain drilling parameters to estimate a pressure gradient for pore pressure evaluation while drilling, particularly in over-pressured zones.

  6. SIMPLEC algorithm - Wikipedia

    en.wikipedia.org/wiki/SIMPLEC_algorithm

    The steps involved are same as the SIMPLE algorithm and the algorithm is iterative in nature. p*, u*, v* are guessed Pressure, X-direction velocity and Y-direction velocity respectively, p', u', v' are the correction terms respectively and p, u, v are the correct fields respectively; Φ is the property for which we are solving and d terms are involved with the under relaxation factor.

  7. Pressure-gradient force - Wikipedia

    en.wikipedia.org/wiki/Pressure-gradient_force

    In fluid mechanics, the pressure-gradient force is the force that results when there is a difference in pressure across a surface. In general, a pressure is a force per unit area across a surface. A difference in pressure across a surface then implies a difference in force, which can result in an acceleration according to Newton's second law of ...

  8. Blasius boundary layer - Wikipedia

    en.wikipedia.org/wiki/Blasius_boundary_layer

    The Blasius normal velocity (,) and the -pressure gradient asymptotes to a value of 0.86 and 0.43, respectively, at large -values whereas (,) asymptotes to the free stream velocity . As η {\displaystyle \eta } goes to zero, the scaled y {\displaystyle y} -pressure gradient goes to 0.16603.

  9. Couette flow - Wikipedia

    en.wikipedia.org/wiki/Couette_flow

    The pressure gradient can be positive (adverse pressure gradient) or negative (favorable pressure gradient). In the limiting case of stationary plates ( U = 0 {\displaystyle U=0} ), the flow is referred to as Plane Poiseuille flow , and has a symmetric (with reference to the horizontal mid-plane) parabolic velocity profile.