/[ascend]/trunk/models/johnpye/fprops/valve.a4c
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revision 2405 by jpye, Tue Mar 1 06:11:22 2011 UTC revision 2406 by jpye, Tue Mar 1 06:13:45 2011 UTC
# Line 44  MODEL valve REFINES stream_equipment; Line 44  MODEL valve REFINES stream_equipment;
44              y = x^2 / sqrt(2. - x^4);              y = x^2 / sqrt(2. - x^4);
45          CASE 'quick':          CASE 'quick':
46              y = 10.*x / sqrt(1 + 99.* x^2);              y = 10.*x / sqrt(1 + 99.* x^2);
47                (* regularised? see http://is.gd/deKZ5j *)
48          CASE 'hyperbolic':          CASE 'hyperbolic':
49              y = 0.1*x/sqrt(1 - 0.99*x^2);              y = 0.1*x/sqrt(1 - 0.99*x^2);
50                (* regularised? http://is.gd/deKZ5j *)
51          OTHERWISE:          OTHERWISE:
52              (* assume linear if we are given nonsense *)              (* assume linear if we are given nonsense *)
53              y = x;              y = x;

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john.pye@anu.edu.au
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