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CFD simulation of natural draught cooling tower wind-covering
, Article Applied Mechanics and Materials, Dubai ; Volume 307 , 2013 , Pages 279-284 ; 16609336 (ISSN) ; 9783037856598 (ISBN) ; Salemkar, H ; Behrouzifar, A ; Abrar, B ; Sharif University of Technology
2013
Abstract
Past experiences have shown that a local wind can considerably affect the performances of powerplant cooling towers and factory chimneys. In thermal powerplants, the performance of Rankin cycles would reduce if the temperature of its condenser increases. This issue is very important to powerplants located in countries with strong local winds. To remedy the malperformance of a natural cooling tower in windy conditions, it is required to understand the physics of flow around cooling towers more clearly. One adverse physics is known as the wind covering problem which can drastically affect the natural draught through a cooling tower in windy conditions. In this paper, we focus on wind-covering...
Development of Guidance and Control System of Environmental Pollution Aerial Inspection System Focusing on Industrial Chimneys
, M.Sc. Thesis Sharif University of Technology ; Banazadeh, Afshin (Supervisor)
Abstract
In this research, first the use of an aerial system for the inspection of industrial chimneys has been investigated. Then, a series of typical requirements are set for the mission of the flying vehicle, and then a suitable multi-rotor for inspection of industrial chimneys has been designed. After determining the aircraft, among the large number of controllers that have been implemented on the multi-rotors since 2008 , the ADRC controller is selected and based on it a control system for the aircraft has been designed. Finally, this controller is tested in 5 different scenarios to evaluate and show its performance and robustness