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### Initial calculations

In subroutine initialcfd.f the following fields are calculated:

- For each node in the fluid, the distance from this node to the nearest solid surface node. This distance is stored in field yy. It is needed for the turbulence model.
- For each solid surface node, the distance to the nearest in-flow node. It is stored in field xsolidsurf. This quantity is also needed for the turbulence model.
- For each node the adjacent element height. This is the shortest distance to from this node to all nodes belonging to elements to which the node belongs. This height is stored in field dh and is used to determine the local increment time .
- The value of the conservative variables in all fluid nodes starting from the physical variables. The conservative variables, stored in field voldaux, are and . The physical variables are the static temperature , the velocity components and the static pressue .

The fields calculated in initialcfd frequently contain distances between nodes, which may have changed since the last call to compfluid.

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**Contents**guido dhondt 2012-10-06