報告書番号

ET88001

タイトル（和文）

DEVELOPMENT OF THE TWO-DIMENSIONAL THERMAL HYDRAULIC ANALYSIS COMPUTER CODE BY FINITE ELEMENT METHOD

タイトル（英文）

DEVELOPMENT OF THE TWO-DIMENSIONAL THERMAL HYDRAULIC ANALYSIS COMPUTER CODE BY FINITE ELEMENT METHOD

概要 （図表や脚注は「報告書全文」に掲載しております）

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概要 （英文）

THERMAL HYDRAULIC ANALYSIS IS ONE OF THE IMPORTANT PROCEDURES TO ASSESS COMPONENTS DESIGN AND SAFETY IN NUCLEAR ENGINEERING. THE DETAILS OF THE TWO-DIMENSIONAL THERMAL HYDRAULIC ANALYIS COMPUTER CODE NEWLY DEVELOPED WITH THE AIM OF APPLICATION ESPECIALLY TOLMFBR COMPONENTS ARE DESCRIBED IN THIS REPORT. THE FEATURES OF THIS CODE ARE: (1)STREAMLINE-UPWIND/PETROV-GALERKIN FINITE ELEMENT METHOD IS USED FOR ANALYZING A REGION WITH COMPLICATED CONFIGRATION AND FOR DEALING WITH HIGH-REYNOLDS(PECLET)NUMBER FLOW. (2)A PROBLEM OF SPURIOUSLY OSCILLATING PRESSURE FIELD,WHICH HAS BEEN TROUBLESOME IN FINITE ELEMENT FLOW ANALYSIS WITH NON-STAGGERED MESH,IS REMOVED BY INTRODUCING NEW NUMERICAL SCHEMES IN THE MOMENTUM CONSERVATION EQUATION AND THE PRESSURE EQUATION. (3)A NEW AND REASONABLE AVERAGING OF SPATIALLY NONUNIFORM DIFFUSIVITIES ARE IMPLEMENTED. (4)FREE IN-FLOW/OUT-FLOW BOUNDARY CONDITIONS AND QUASI THREE-DIMENSIONAL ANALYSIS CAN BE DEALT WITH. SOME NUMERICAL RESULTS ARE SHOWN TO PRESENT THE ABILITY OF THIS COMPUTER CODE.

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