Venecia


General description
Applications and Validation
Example 1: ITER. Toroidal Field Coil
Eхample 2: ITER. Central Solenoid and Poloidal Field Coils
AutoCAD meshing
Structure of the code, modelling strategy, interface
NUMERICAL SOLUTION
Summary 		MATHEMATICAL MODELS:
Helium flow modelling
Conductor modelling
Collector modelling
Valve modelling
Modelling of solids
Pump modelling
Coolant properties



MATHEMATICAL MODELS. Coolant properties

Coolant properties are calculated from the unified coolants database. The base consists of a set of tables prepared for each coolant from a known source [2]. Enthalpy H and pressure P are accepted as independent variables for these tables and form a common 2D mesh for all thermodynamic and thermo-physical properties of the coolant. Special subroutines provide an appropriate approximation accuracy of 0.2% for coolant properties in arbitrary (P,H)-point. A two-phase coolant region is simulated as a homogenous mixture. An equation of state for such mixture has a form



where ρ', ρ", are the liquid and vapor coolant densities on the boundary line of coolant TS-diagram; H', H" are the liquid and vapor enthalpies as a function of pressure P.






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