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化学分野におけるCFDの活用(1)‐実験スケールからプラントスケールへの転換‐
本ウェビナーでは、プロジェクトの設計および分析段階でのCFDシミュレーション の付加価値について説明します。STAR-CCM+を用いたデモンストレーションで、シミュレーションのための幾何学データの変換とパラ メータ入力操作のワークフローをお見せします。 Japanese CPI Webinar Webinar covering CFD use in the CPI industry in Japanese
 車両シミュレーションにおける熱流体解析の最新技術
乗用車、トラック、重機械、防衛に至るまで、あらゆる産業が製品性能の向上のためだけでなく市場投入までの時間削減や試 作コストの削減のために車両シミュレーションをますます活用しています。 本ウェビナーでは、現在の設計や解析における課題解決のための最新の技術革新について紹介します。熱伝導やエネルギー管 理における先進性や、車両内部での快適性や熱システムの効果的な管理についても紹介します。 Japanese Vehicle Simulation Webinar Webinar on simulating Ground Vehicles in Japanese
現在の電気自動車(EV)・ハイブリッド車のためのエンジ ニアリングシミュレーションの革新
本ウェビナーでは、電気自動車(EV)・ハイブリッド車の開発に影響を与える最新のエンジ ニアリングシミュレーション技術をご紹介します。また、電動航空機、衛星技術や、環境等に配慮した この他の交通機関に及ぼす影響についてもディスカッションします。 Japanese Battery and Electrification Webinar Webinar on Battery Design and Electrification in Japanese
Due to the geometrical structure and ventilation configuration of naturally ventilated livestock buildings the animal occupied zone can experience large heterogeneities in ventilation efficiency. Ensuring a homogeneous indoor environment is important when designing naturally livestock buildings as producers should be confident that all animals are receiving the same environmental conditions, at least for the prevailing climate. Moreover, by including climate homogeneity in the building design process, the occurrence of high airspeeds in specific regions of a building can be reduced during...
Computational Fluid Dynamic (CFD) studies of sunroof buffeting on production vehicles demonstrate accurate prediction of the main buffeting frequency and its harmonics. For production vehicles, none to date has illustrated the phenomenon of buffeting intensity maximization over a vehicle speed range, at a frequency related to the volume of the passenger compartment. All assume that the interior surfaces of the vehicle are rigid, potentially overestimating in-cabin noise intensities by failing to account for surface impedance from non-acoustically rigid trims and linings. In this paper, a...
Although the topic of roll damping of vessels at sea is already brought to the attention of naval architects by Froude more than 100 years ago, the physics of it remain intriguing, even today. An accurate prediction of the motions of offshore structures in harsh environments, designed for 25 years continuous operation, is the topic of this paper. Model test experiments for two FPSO’s developed by SBM for Petrobras are discussed. It is shown that the FPSO submerged riser balcony on one side of the vessel contributes to the roll damping through similar physics as the bilge keel does.Flow memory...
The continuously increasing computer power has made it possible to make performance calculations based on RANS CFD method for propellers within commercial acceptable lead times nowadays. Wärtsilä has decided to extent the scope of the numerical analyses, to include the ship hull geometry as well. The final goal is to have a full scale numerical towing tank in operation within the next few years. This ambitious plan can be divided into several building blocks, like developing method to calculate open water performance and the implementation of the cavitation model. In this paper two building...
In cities, flood waves may propagate over street surfaces below which lie complicated pipe networks used for storm drainage and sewage. The flood and pipe flows can interact at connections between the underground pipes and the street surface. The present paper examines this interaction, using the shallow water equations to model the flood wave hydrodynamics. Sources and sinks in the mass conservation equation are used to model the pipe inflow and outflow conditions at bed connections. We consider the problem reduced to one dimension. The shallow water equations are solved using a Godunov-type...
Aerodynamically induced car body vibrations of high-speed trains inside tunnels have for approximately two decades been recognized as a problem in Japan, while other nations’ high-speed rail services have not reported similar problems. In order to shed light on this contradiction the scope of the present paper is to primarily explore tail car vibrations of Deutsche Bahn AG’s high-speed train ICE 2 and Japan Railways series 300 Shinkansen train. Despite similarities of these two trains the problems are reported only for the latter. Several large eddy simulations are carried out to predict the...

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