Takanori Haga

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An efficient implicit lower-upper symmetric Gauss-Seidel (LU-SGS) solution approach has been applied to a high order spectral volume (SV) method for un-structured tetrahedral grids. The LU-SGS solver is preconditioned by the block element matrix, and the system of equations is then solved with a LU decomposition. The compact feature of SV reconstruction(More)
The aerodynamics simulation code for complete aircraft configuration using high order SV method has been developed for the purpose of improving aircraft design technology. The developed code is first validated for transonic flow computation over ONERA-M6 wing, and is then applied to a simulation around the JAXA high-lift configuration model. The obtained(More)
Delayed cardiac tamponade is an unusual but serious complication of cardiac surgery. Echocardiography and computed tomography (CT) are well established methods for the detection of pericardial effusions. Catheter insertion guided by CT has been used to accomplish non operative drainage of symptomatic postoperative pericardial effusion in seven cases. These(More)
Laparoscopic cholecystectomy (LC) is becoming increasingly common. When performing LC, the surgeon may face the risk of ductal injury because of the narrow visual field. Thus, detailed anatomical information on the biliary tree is necessary. DIC-helical CT was carried out in 39 patients suspected of having biliary diseases. The cystic duct was visualized in(More)
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