shapeDerivatives
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Computes the shape function derivatives and the determinant of the Jacobian matrix
Version : 1.0
Author : George Kourakos
email: giorgk@gmail.com
web : http://groundwater.ucdavis.edu/msim
Date 18-Mar-2014
Department of Land Air and Water
University of California Davis
Contents
Usage
[B Jdet]=shapeDerivatives(p, MSH, n, opt)
Input
p: [Np x 3] Coodrinates of nodes [x1 y1 z1; x2 y2 z2;...xn yn zn], Np is the number of nodes
MSH : [Nel x Np_el] id of elements. Each row correspond to an element. Nel is the number of elements. Np_el is the number of nodes to define the element.
n: the intergration point where the derivatives will be evaluated
opt : Structure with the following fields
dim: Dimension of the problem : 1, 2 or 3.
el_type: type of element e.g. triangle, prism etc...
el_order: order of the element: linear or quadratic
Output
B : Shape function derivatives
Jdet : The determinant of the Jacobian Matrix