نتایج جستجو برای: مدلسازی cfd

تعداد نتایج: 25098  

2005
TAO XING RAJESH BHASKARAN

This study describes the development, implementation, and evaluation of an effective curriculum for students to learn computational fluid dynamics (CFD) in introductory and intermediate undergraduate and introductory graduate level courses/ laboratories. The curriculum is designed for use at different universities with different courses/laboratories, learning objectives, applications, condition...

Journal: :Journal of personality assessment 2004
Jordan A Litman Tiffany L Jimerson

Curiosity as a feeling of deprivation (CFD) reflects feelings of uncertainty and tension that motivate information-seeking and problem-solving behavior. Twenty-seven CFD items were administered to 321 participants (248 women, 73 men) along with other measures of curiosity and other personality traits such as anxiety, anger, and depression. Factor analyses of the CFD items identified 3 factors f...

امین میرزامحمد حسین قماشی علیرضا ساعتچی نوبری مسعود یحیایی کورش عطاریان,

موتورهای اشتعال تراکمی سوخت همگن (HCCI) ایده‌ای جدید برای کاهش آلاینده‌ها و همچنین میزان مصرف سوخت در موتورهای احتراق داخلی می‌باشد. به خاطر وضع قوانین سخت‌گیرانه در مورد آلاینده‌های تولیدی، تحقیقات زیادی بر روی این موتورها به عنوان روش جایگزین موتورهای دیزل معمولی انجام شده است. در این تحقیق با استفاده از مدلسازی سه‌بعدی به روش CFD، ابتدا احتراق مخلوط همگن سوخت دیزل سپس حالت دو‌سوخته مورد بررس...

2014
Alejandro Roldán-Alzate Sylvana García-Rodríguez Leonardo Rivera Oliver Wieben Petros V Anagnostopoulos Christopher J Francois

INTRODUCTION Altered total cavopulmonary connection (TCPC) hemodynamics can cause long-term complications. Patient-specific anatomy hinders generalized solutions. 4D Flow MRI allows in vivo assessment, but not predictions under varying conditions and surgical approaches. Computational fluid dynamics (CFD) improves understanding and explores varying physiological conditions. This study investiga...

2005
Terryl Matthews

For several decades, turboexpander designers have relied on experience and traditional design tools to create their products. Recent advances in CFD (computational fluid dynamics) software and desktop computing power have made it possible for some manufacturers to investigate unique fluid flow fields in routine design applications. In this paper, four case studies of CFD in high performance exp...

2011
Andreas Kotoulas Haris Kokotas Konstantinos Kopsidas Konstantinos Droutsas Maria Grigoriadou Hasret Bajrami Daniel F. Schorderet Michael B. Petersen

PURPOSE To report the findings of the clinical and molecular evaluation in a Greek family with fleck corneal dystrophy (CFD). METHODS A 58-year-old woman was seen on routine ophthalmic examination and diagnosed as having CFD. All available family members were examined to evaluate the clinical findings and inheritance of the disease. Twenty members of the family in five generations underwent s...

2011
Conrad Voelker Oliver Kornadt

When coupling computational fluid dynamics (CFD) with a detailed thermal comfort model describing the human thermoregulation, the characteristics of the micro-climate of the human body have to be known. In the paper, CFD has been applied to investigate human body’’s micro climate. A climate chamber equipped with a thermal manikin has been used to validate the CFD simulations against measurement...

2013
Dazhi SUN Jinpeng LV S. Travis WALLER

This paper introduces computational fluid dynamics (CFD), a numerical approach widely and successfully used in aerospace engineering, to deal with surface traffic flow related problems. After a brief introduction of the physical and mathematical foundations of CFD, this paper develops CFD implementation methodology for modeling traffic problems such as queue/platoon distribution, shockwave prop...

2008
Lisa M. Leslie Michele J. Gelfand

Although gender discrimination has been illegal in organizations since the passage of the Civil Right Act of 1964, individuals remain hesitant to claim internally by making members of their employing organization aware of gender discrimination. Yet surprisingly little research has examined the individual difference and contextual antecedents to internal discrimination claims. We advance an inte...

2017
Chen Qian Shaoqing Ju Jing Qi Jianmei Zhao Xianjuan Shen Rongrong Jing Juan Yu Li Li Yingjuan Shi Lurong Zhang Zhiwei Wang Hui Cong

Gastric cancer (GC) is the fourth most common cancer and the second major cause of cancer-related deaths worldwide. In our previous study, a novel and sensitive method for quantifying cell-free DNA (CFD) in human blood was established and tested for its ability to predict patients with tumor. We want to investigate CFD expression in the sera of GC patients in an attempt to explore the clinical ...

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