نتایج جستجو برای: ergun model
تعداد نتایج: 2104350 فیلتر نتایج به سال:
We present a simple and practical technique for seamlessly texturing quadrilateral meshes. Using our technique any image can be converted to an isotropic texture that can be mapped to any quadrilateral mesh without any discontinuity or singularity. Using our technique, we can make any abstract painter like Miro to seamlessly paint any smooth manifold surface. The surface can have any number of ...
Cycle covering is a well-studied problem in computer science. In this paper, we develop approximation algorithms for variants of cycle covering problems which bound the size and/or length of the covering cycles. In particular, we give a (1 + ln 2)-approximation for the lane covering problem [4, 5] in weighted graphs with metric lengths on the edges and an O(ln k) approximation for the bounded c...
چکیده ندارد.
Heat and mass transfer in a permeable fabric system used for Personal Protective Equipment (PPE) was investigated using hot air jet impingement conditions to mimic the jet exhaust of Short Take-Off and Vertical Landing (STOVL) aircraft. The STOVL aircraft uses a thrust-vectoring nozzle of the jet engine and a lift fan in order to vertically land and take off a short runaway. The jet engine exha...
due to lack of knowledge management system in the organization of technical and vocational university of iran (tvuni) and losing good employees because of retirement and substitution causes huge amount of costs to replace the similar expertise. there is no any suitable system in the tvuni to store, to document, and to distribute knowledge. based on the university’s features such as it has diffe...
یکی از مهمترین روشهای تحلیل سازه ها در مهندسی مکانیک استفاده از مدل المان محدود است که اعتبار سنجی مدل مذکور، اهمیت بسزایی دارد. بدین منظور معمولا سازه مورد نظر را بصورت تجربی تحت تست آنالیز مودال قرار می دهند که مسلما فرکانس ها و شکل مود استخراجی با نظایر استخراج شده در مدل المان محدود اختلاف دارد. برای به حد اقل رساندن این اختلاف از روش های موسوم به مدل بروز رسا نی شده ) ( model updatingاستفا...
نتایج مطالعات مختلف در طول سال های گذشته به خوبی نشان می دهند که با افزایش تولید شیر، عملکرد تولیدمثلی در گاو شیری دچار افت شده است، که این مسأله می تواند سوددهی واحدهای تولیدی گاوشیر را تحت تأثیر قرار دهد به همین دلیل هدف از انجام این مطالعه بررسی صفات تولیدمثلی در شهرکرد بود. در این پژوهش از 700 رکورد مربوط به 501 تلیسه هلشتاین و 1773 رکورد مربوط به788 رکورد رأس گاو (موجود در 8 و 9 واحد پرورش...
ACKNOWLEDGEMENTS Completing this dissertation has been quite a journey! It has brought me immense professional and personal growth and a plethora of experiences that I will fondly remember. I am very grateful to have worked with Alan Erera and Martin Savelsbergh. They have been exceptional advisors who guided, motivated, and supported me to develop as a researcher and make this dissertation pos...
There exists evidence in the social science literature that women may be more relationshiporiented, may have higher standards of ethical behavior and may be more concerned with the common good than men are. This would imply that women are more willing to sacri ce private pro t for the public good, which would be especially important for political life. A number of papers with eld data have fou...
Many important natural processes involving flow through porous media are characterized by large filtration velocity. Therefore, it is important to know when the transition from viscous to the inertial flow regime actually occurs in order to obtain accurate models for these processes. In this paper, a detailed computational study of laminar and inertial, incompressible, Newtonian fluid flow acro...
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