finiteDifference.h File Reference

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Namespaces
namespace	olb
	Top level namespace for all of OpenLB.
namespace	olb::fd

Functions
template<typename T >
constexpr T	olb::fd::centralGradient (T u_p1, T u_m1) any_platform
	Second-order central gradient (u_p1 = u(x+1))
template<typename T >
constexpr T	olb::fd::boundaryGradient (T u_0, T u_1, T u_2) any_platform
	Second-order asymmetric gradient (u_1 = u(x+1))
template<typename T >
constexpr T	olb::fd::FSGradient (T u_0, T u_1, T u_2)
	Forward second-order first derivative.
template<typename T >
constexpr T	olb::fd::BSGradient (T u_0, T u_1, T u_2)
	Backward second-order first derivative.
template<typename T >
constexpr T	olb::fd::boundaryZeroGradient (T u_1, T u_2)
	Value at u_0 for which asymmetric gradient is zero (u_1 = u(x+1))
template<typename T >
constexpr T	olb::fd::centralSecondDeriv (T u_m1, T u_0, T u_p1) any_platform
	Second order central second derivative (u_p1 = u(x+1))
template<typename T >
constexpr T	olb::fd::centralSecondDeriv (T u_m2, T u_m1, T u_0, T u_p1, T u_p2) any_platform
	Forth order central second derivative (u_p1 = u(x+1))
template<typename T >
constexpr T	olb::fd::linearInterpolate (T u_0, T u_1, T pos)
	Linear interpolation (yields u0 at pos=0 and u1 at pos=1)