Lagrangian Thermodynamics of Heat Transfer in Systems Including Fluid Motion
نویسندگان
چکیده
منابع مشابه
Lagrangian Thermodynamics of Heat Transfer in Systems Including Fluid Motior2
The Lagrangian thermodynamic equations of irreversible processes are extended to convective heat transfer. This generalization provides equations for the unified analysis of transient heat flow in complex systems comprising solid structures and moving fluids in either laminar or turbulent flow. The concept of a surface-heat-transfer coefficient is eliminated from the formulation. The theory is ...
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In this paper Mathematical structure of time-dependent Lagrangian systems and their symmetries are extended and the explicit relation between constants of motion and infinitesimal symmetries of time-dependent Lagrangian systems are considered. Starting point is time-independent Lagrangian systems ,then we extend mathematical concepts of these systems such as equivalent lagrangian systems to th...
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نصب منابع پراکنده در سیستم های توزیع و فوق توزیع علاوه بر مزیت های فراوان، مشکلاتی را هم به همراه دارد. یکی از این مشکلات تأثیر این منابع روی اندازه جریان های اتصال کوتاه است. به طور معمول از حفاظت های مبتنی بر اصل جریان زیاد در سیستم های توزیع و فوق توزیع استفاده می شود. از مهمترین طرح های حفاظتی استفاده شده در فیدرهای توزیع، حفاظت فیوز- ریکلوزر است. همچنین از طرح های حفاظتی جریان زیاد جهتی در...
the symmetries of equivalent lagrangian systems and constants of motion
in this paper mathematical structure of time-dependent lagrangian systems and their symmetries are extended and the explicit relation between constants of motion and infinitesimal symmetries of time-dependent lagrangian systems are considered. starting point is time-independent lagrangian systems ,then we extend mathematical concepts of these systems such as equivalent lagrangian systems to the...
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I N TWO RECENT PAPERS we have discussed the shortcomings of the concept of boundary-layer heat-transfer coefficient and developed some new approaches to thermal flow analyses which do not make use of this concept and are based on the variational and Lagrangian thermodynamics introduced earlier by this writer. The first paper,’ which deals more specifically with the local heat-transfer coefficie...
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ژورنال
عنوان ژورنال: Journal of the Aerospace Sciences
سال: 1962
ISSN: 1936-9999
DOI: 10.2514/8.9559