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Brno University of Technology The paper deals with instigation of influence of air duct geometry on air jet direction in aircraft cabin ventilated by mixing ventilation. CFD approach was used for investigation and model geometry was based on small aircraft cabin mock-up geometry. Model was also equipped by nine seats and five manikins that represent passengers. The air jet direction was observed for selected ambient environment parameters and several types of air duct geometry and influence of main air duct geometry on jets direction is discussed. The model was created in StarCCM+ ver. 6.04...
German Aerospace Center, Institute of Aerodynamics and Flow Technology Aerodynamic noise generated by the low Mach number flow in an air cabin intake is investigated numerically. For analysis a realistic intake installed DLR's cabin test facility Do728, was chosen. Two independent approaches were used. First, the so called hybrid approach, based an incompressible simulation of the airflow in the intake and Lighthill aeroacoustical analogy was applied, which separated generation and propogation of sound. The flow field was calculated with OpenSource code OpenFOAM and acoustical sources and...
This paper presents an approach to characterize the noise produced by an air vent of the Environmental Control System (ECS) for a regional transportation aircraft. The analyses have been conducted for different values of inlet mass flow rate on 2-D and 3-D models. Noise computations have been made in different points of control volume (Receivers) to better predict the volume distribution of sound pressure. The Ffwocs Williams – Hawkings model has been used for aero-acoustic analysis which is based on the Lighthill acoustic analogy generalized with the inclusion of moving surface. The k-ε...
The design of a long endurance electric UAV is presented. The mission requirements are derived from civilian surveillance applications, such as forest, coast or border patrol. As such, long endurance is desired, which is tackled by a careful lightweight airframe design and an electric propulsion system assisted with solar cell arrays. The main steps of the design are covered, including numerical simulations, as well as construction, component and systems testing and flight testing. The feasibility of a green, low cost, small footprint UAV is demonstrated.
Joby Aviation One promising solution in the search for a quiet, efficient VTOL aircraft configuration employs two-blade rotors which lock into a fixed position during horizontal flight, becoming lifting surfaces. The design of these blades and their integration onto an airframe pose many challenges, including performing this blade repositioning with a mechanism that is adequately simple, reliable, lightweight, and aerodynamic; determining a blade geometry that strikes the right compromise between performance as a rotor blade and as a wingtip; and providing sufficient pitch and yaw control in...
CD-adapco, the largest privately held CFD-focused provider of Computer Aided Engineering software, is proud to announce that Wian van der Merwe of the CFD Consultation agency, Aerotherm, is the winner of the 2016 CAE Post-Processing Contest for his expert use of simulation in the design of a cyclist.
DARS is a simulation tool for the 0D and 1D management and analysis of chemical reactions. It makes our customers more competitive in the market by enabling analyses of combustion of new fuels and in new operating ranges at a significantly reduced cost. DARS v2.12 is devoted to enhancing the productivity of our customers, to accelerate their design decision process and to remove all obstacles for innovating
CD-adapco, the largest privately held CFD-focused provider of Computer Aided Engineering software, today announced the release of DARS v2.12, its simulation tool for the 0D and 1D management and analysis of chemical reactions. The new release focuses on boosting throughput when exploring new fuel blends under a wide range of operating conditions. The fuel libraries generated with DARS v2.12 can then be used to source combustion analysis carried out with STAR-CD® and STAR-CCM+®.
DARS is a simulation tool for the 0D and 1D management and analysis of chemical reactions. The new v2.12 release focuses on boosting throughput when exploring new fuel blends under a wide range of operating conditions. The fuel libraries generated with DARS v2.12 can then be used to source combustion analysis carried out with STAR-CD® and STAR-CCM+®.
設計最適化の新しいご提案  ~HEEDS/Optimate+を使ったコンピュータとエンジニアのコラボレーション探査~
設計 最適 化 が 設計 ・ 開発 の 現場で活用され始めてしばらくが経ちますが、「最 適 化 をするとエンジニアが考えなくなる」、「 アルゴリズムなんて信用できな い」、「エンジニア の 知見・経験を活かせない」と思い、 最適 化 の 導入に二 の 足を踏んでいる方もまだまだたくさんおられるかと思います。 今まで の 最適 化 ツールでは「 全てを探査アルゴリズムにゆだねざるを得ない」 という形でしたが、CD- adapcoが提供する 設計 探査ツールHEEDS、 Optimate+に は「デザインインジェクション」 という画期的な機能を搭載しており、コンピ ュータとエンジニア の お互い の 良いところを融合して効率良くデザ インを探査 する「コラボレーション探査」を行っていただけます。 コラボレーション探査 の 有用性について、 ユーザー様 の 事例紹介と製品 の デモ を通じて、本 ウェビナー で ご 紹介させていただきます。 HEEDS、Optimate+ が新しく切り開く新しい 設計 探査 の 可能性をぜひ本ウェビ ナーで ご 体感ください。 【受講対象】  ・ アルゴリズムが信じられないと思い 設計 最適 化 を敬遠されてきた方 、   技術伝承・技術者 の 育成に課題を・感じていらっしゃる方  ・これから 設計 最適 化 に取り組まれる ご 予定 の 方など

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