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Matt Straw and Alex Read Talk...Erosion
Matt Straw and Alex Read talk about the application of STAR-CCM+ within the Oil & Gas industry, the talk is concerned with a broad area of subsea applications, with a particular focus given to erosion. This is video 1 of 3
Solutions with STAR-CCM+ for mixing. Drag force on the particles is modeled using the Gidaspow formula. Two modeling techniques are used for impeller rotation : Multiple Reference Frame (MRF) and Rigid Body Motion (RBM).
Solutions with STAR-CCM+ on a stirred tank reactor to accurately predict solids concentration profiles and to establish suspension criteria under varying solids concentrations and impeller RPMs.
Solution with STAR-CCM+ on a porous stent for a brain aneurysm. Analysis helps pinpoint areas of high shear stress and recirculation, controlling the circulatory flow within the aneurysm sac.
Mesh for evaluation of porous stent for a brain aneurysm.Optimate can be used to perform cost-effective "what-if" scenarios and parametric studies to improve on device designs.
Large-Eddy Simulation (LES) was used to perform computations of air entrainment and mixing during diesel spray combustion. The results of this simulation were compared with those of Reynolds Averaged Navier Stokes (RANS) simulations and an experiment. The effect of LES on non-vaporizing and vaporizing sprays was evaluated. The validity of the grid size used for the LES analysis was confirmed by determining the subgrid-scale (SGS) filter threshold on the turbulent energy spectrum plot, which separates a resolved range from a modeled one. The results showed that more air was entrained into the...
Low-Temperature Combustion (LTC) is becoming a promising technology for simultaneously reducing soot and NOx emissions from diesel engines. LTC regimes are evaluated by the flame lift-off length – the distance from the injector orifice to the location of hydroxyl luminescence closest to the injector in the flame jet. Various works have been dedicated to successful simulations of lifted flames of a diesel jet by use of various combustion modeling approaches. In this work, flame surface density and flamelet concepts were used to model the diesel lift-off length under LTC conditions. Numerical...
터보기계 열 전달 해석과 시뮬레이션
터보기계 열 전달 해석과 시뮬레이션 가스 터빈 작동 온도가 높아짐에 따라서, 열 관리 방법이 중요해지고 있습니다. 터빈 블레이드와 베인에 충분한 냉각을 제공하기 위한 설계는 블레이드 손상과 성능 저하를 방지하기 위해 필요합니다. 전체적인 유체 및 고체의 온도를 알고 있는 것 이외에도 복잡한 유동 특성과 함께 온도 균일도 및 핫 스팟(hot spot)을 파악하는 것도 중요합니다. 아울러 반류 충돌(wake impingement)과 열 적층(thermal stacking)과 같은 익렬 상호작용도 고려되어야 합니다. 다중 물리 해석 방법은 고장 해석 및 재설계를 위한 열 관리 문제들을 방지하기 위해 설계 단계에서 적용될 수 있습니다. 복잡한 물리현상으로 인해 기본 원리들 및 물리 법칙에 근거한 모델들과 함께 고정밀의 계산 격자가 사용됩니다. 등각 격자(conformal mesh), 근접 벽 경계층 격자 및 열 구매 정밀도들도 격자 생성에서 고려해야 할 사항입니다. CD-adapco의 터보기계 시뮬레이션 전문가가 블레이드 냉각과 열 관리에 중점을 두고 설명합니다. 복합열전달 및 비정상 터보기계 유동을 정확하게 모델링하기 위한 STAR-CCM+ 내의 물리 모델들이...
Bill Clark Talks...About CD-adapco
Executive Vice President Bill Clark talks about where our contribution to simulation will be made in the future.
Alan Mueller Talks...Technology
Alan Mueller, Chief Technology Officer discusses simulation with a nod to the possible future of where advancement in simulation is destined.