Numerical simulation of cold air jet attachment to non adiabatic walls
Апстракт
A jet of cold air is denser then ambient air but it adheres to the ceiling of the room over the given distance when it is blown horizontally close to it. Such behaviour of fluid jets is well-known as Coanda effect and it is widely used in practice like in the case of ventilation and air-conditioning of rooms. This phenomenon is not sufficiently known both in terms of mechanism and quantitative effects. The complexity is arising in the case of non-adiabatic ceiling that is common practice in real building structures, since the cold air jet, attachment distance is strongly influenced by heat flux thought the ceiling. The aim of this paper is to propose an algorithm of numerical simulation of fluid flow and heat transfer in the room and ceiling simultaneously, known as conjugate heat transfer problem. Using proposed model, uncertainty of heat transfer coefficient determination is avoided integrating the same general transport equation for fluid flow and heat transfer over the whole comput...ational domain including both air movements in the room and ceiling solids.
Извор:
IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings, 2009, 481-488Издавач:
- International Building Performance Simulation Association
Напомена:
- 11th International Conference Building Performance Simulation Association : July 27-30, Glasgow, Scotland, 2009.
Колекције
Институција/група
VinčaTY - CONF AU - Mirkov, Nikola AU - Stevanović, Žana AU - Stevanović, Žarko PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12753 AB - A jet of cold air is denser then ambient air but it adheres to the ceiling of the room over the given distance when it is blown horizontally close to it. Such behaviour of fluid jets is well-known as Coanda effect and it is widely used in practice like in the case of ventilation and air-conditioning of rooms. This phenomenon is not sufficiently known both in terms of mechanism and quantitative effects. The complexity is arising in the case of non-adiabatic ceiling that is common practice in real building structures, since the cold air jet, attachment distance is strongly influenced by heat flux thought the ceiling. The aim of this paper is to propose an algorithm of numerical simulation of fluid flow and heat transfer in the room and ceiling simultaneously, known as conjugate heat transfer problem. Using proposed model, uncertainty of heat transfer coefficient determination is avoided integrating the same general transport equation for fluid flow and heat transfer over the whole computational domain including both air movements in the room and ceiling solids. PB - International Building Performance Simulation Association C3 - IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings T1 - Numerical simulation of cold air jet attachment to non adiabatic walls SP - 481 EP - 488 DO - 10.26868/25222708.2009.0481-488 ER -
@conference{ author = "Mirkov, Nikola and Stevanović, Žana and Stevanović, Žarko", year = "2009", abstract = "A jet of cold air is denser then ambient air but it adheres to the ceiling of the room over the given distance when it is blown horizontally close to it. Such behaviour of fluid jets is well-known as Coanda effect and it is widely used in practice like in the case of ventilation and air-conditioning of rooms. This phenomenon is not sufficiently known both in terms of mechanism and quantitative effects. The complexity is arising in the case of non-adiabatic ceiling that is common practice in real building structures, since the cold air jet, attachment distance is strongly influenced by heat flux thought the ceiling. The aim of this paper is to propose an algorithm of numerical simulation of fluid flow and heat transfer in the room and ceiling simultaneously, known as conjugate heat transfer problem. Using proposed model, uncertainty of heat transfer coefficient determination is avoided integrating the same general transport equation for fluid flow and heat transfer over the whole computational domain including both air movements in the room and ceiling solids.", publisher = "International Building Performance Simulation Association", journal = "IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings", title = "Numerical simulation of cold air jet attachment to non adiabatic walls", pages = "481-488", doi = "10.26868/25222708.2009.0481-488" }
Mirkov, N., Stevanović, Ž.,& Stevanović, Ž.. (2009). Numerical simulation of cold air jet attachment to non adiabatic walls. in IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings International Building Performance Simulation Association., 481-488. https://doi.org/10.26868/25222708.2009.0481-488
Mirkov N, Stevanović Ž, Stevanović Ž. Numerical simulation of cold air jet attachment to non adiabatic walls. in IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings. 2009;:481-488. doi:10.26868/25222708.2009.0481-488 .
Mirkov, Nikola, Stevanović, Žana, Stevanović, Žarko, "Numerical simulation of cold air jet attachment to non adiabatic walls" in IBPSA 2009 : 11th International Conference Building Performance Simulation Association : Proceedings (2009):481-488, https://doi.org/10.26868/25222708.2009.0481-488 . .