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  2. Continuity equation - Wikipedia

    en.wikipedia.org/wiki/Continuity_equation

    A continuity equation or transport equation is an equation that describes the transport of some quantity. It is particularly simple and powerful when applied to a conserved quantity , but it can be generalized to apply to any extensive quantity .

  3. Navier–Stokes existence and smoothness - Wikipedia

    en.wikipedia.org/wiki/Navier–Stokes_existence...

    Turbulence is a difficult phenomenon to model and understand, and it adds another layer of complexity to the problem of solving the Navier–Stokes equations. To solve the Navier–Stokes equations, we need to find a velocity field v ( x , t ) {\displaystyle \mathbf {v} (x,t)} and a pressure field p ( x , t ) {\displaystyle p(x,t)} that satisfy ...

  4. Continuous function - Wikipedia

    en.wikipedia.org/wiki/Continuous_function

    Continuity of real functions is usually defined in terms of limits. A function f with variable x is continuous at the real number c, if the limit of (), as x tends to c, is equal to (). There are several different definitions of the (global) continuity of a function, which depend on the nature of its domain.

  5. Crank–Nicolson method - Wikipedia

    en.wikipedia.org/wiki/Crank–Nicolson_method

    The Crank–Nicolson stencil for a 1D problem. The Crank–Nicolson method is based on the trapezoidal rule, giving second-order convergence in time.For linear equations, the trapezoidal rule is equivalent to the implicit midpoint method [citation needed] —the simplest example of a Gauss–Legendre implicit Runge–Kutta method—which also has the property of being a geometric integrator.

  6. Hardy Cross method - Wikipedia

    en.wikipedia.org/wiki/Hardy_Cross_method

    We solve the network by method of balancing heads, following the steps outlined in method process above. 1. The initial guesses are set up so that continuity of flow is maintained at each junction in the network. 2. The loops of the system are identified as loop 1-2-3 and loop 2-3-4. 3. The head losses in each pipe are determined.

  7. Method of continuity - Wikipedia

    en.wikipedia.org/wiki/Method_of_continuity

    In the mathematics of Banach spaces, the method of continuity provides sufficient conditions for deducing the invertibility of one bounded linear operator from that of another, related operator. Formulation

  8. List of continuity-related mathematical topics - Wikipedia

    en.wikipedia.org/wiki/List_of_continuity-related...

    Continuous function; Absolutely continuous function; Absolute continuity of a measure with respect to another measure; Continuous probability distribution: Sometimes this term is used to mean a probability distribution whose cumulative distribution function (c.d.f.) is (simply) continuous.

  9. Absolute continuity - Wikipedia

    en.wikipedia.org/wiki/Absolute_continuity

    Absolute continuity of measures is reflexive and transitive, but is not antisymmetric, so it is a preorder rather than a partial order. Instead, if μ ≪ ν {\displaystyle \mu \ll \nu } and ν ≪ μ , {\displaystyle \nu \ll \mu ,} the measures μ {\displaystyle \mu } and ν {\displaystyle \nu } are said to be equivalent .