The Experts below are selected from a list of 105 Experts worldwide ranked by ideXlab platform
P. S. S. Srinivasan - One of the best experts on this subject based on the ideXlab platform.
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Analysis of single side ventilated and cross ventilated rooms by varying the width of the window opening using CFD
Solar Energy, 2009Co-Authors: K. Visagavel, P. S. S. SrinivasanAbstract:Abstract Natural ventilation contributes to the improvement of thermal comfort and quality conditions of the internal air and at the same time it is recognized very effective technique when applied properly. The present project refers to the numerical predictions of air velocities in cross and single-sided naturally ventilated rooms which are considered along with Atmospheric Zone. This is done for different sizes of the opening at particular height of the wall. Continuity and Momentum equations have been solved by control volume method. SIMPLE and SIMPLEC algorithm are used to solve these equations. Steady, k - e turbulence model and incompressible flow of a constant property fluid under Boussinesq’s approximation have been considered. Air velocities were taken at various heights from middle of the opening and compared for single side ventilated and cross ventilated rooms. Air flow rate increases with increase of width of the opening.
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Analysis of Cross and Single Sided Naturally Ventilated Rooms Using CFD
American Journal of Environmental Sciences, 2007Co-Authors: K. Visagavel, P. S. S. SrinivasanAbstract:Natural ventilation contributes to the improvement of thermal comfort and quality conditions of the internal air, while at the same time it is recognized as a very efficient technique that, when applied properly. The present project refers to the numerical prediction of air velocities in cross and single-sided naturally ventilated rooms, which are considered along with Atmospheric Zone. Continuity and Momentum equations have been solved by Control Volume Method. SIMPLE and SIMPLEC algorithm are used to solve these equations. Steady, k-ε turbulence model and incompressible flow of a constant property fluid under Boussinesqs approximation have been considered. The results are presented for both cross and single-sided naturally ventilated rooms by using Grid independence test
K. Visagavel - One of the best experts on this subject based on the ideXlab platform.
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Analysis of single side ventilated and cross ventilated rooms by varying the width of the window opening using CFD
Solar Energy, 2009Co-Authors: K. Visagavel, P. S. S. SrinivasanAbstract:Abstract Natural ventilation contributes to the improvement of thermal comfort and quality conditions of the internal air and at the same time it is recognized very effective technique when applied properly. The present project refers to the numerical predictions of air velocities in cross and single-sided naturally ventilated rooms which are considered along with Atmospheric Zone. This is done for different sizes of the opening at particular height of the wall. Continuity and Momentum equations have been solved by control volume method. SIMPLE and SIMPLEC algorithm are used to solve these equations. Steady, k - e turbulence model and incompressible flow of a constant property fluid under Boussinesq’s approximation have been considered. Air velocities were taken at various heights from middle of the opening and compared for single side ventilated and cross ventilated rooms. Air flow rate increases with increase of width of the opening.
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Analysis of Cross and Single Sided Naturally Ventilated Rooms Using CFD
American Journal of Environmental Sciences, 2007Co-Authors: K. Visagavel, P. S. S. SrinivasanAbstract:Natural ventilation contributes to the improvement of thermal comfort and quality conditions of the internal air, while at the same time it is recognized as a very efficient technique that, when applied properly. The present project refers to the numerical prediction of air velocities in cross and single-sided naturally ventilated rooms, which are considered along with Atmospheric Zone. Continuity and Momentum equations have been solved by Control Volume Method. SIMPLE and SIMPLEC algorithm are used to solve these equations. Steady, k-ε turbulence model and incompressible flow of a constant property fluid under Boussinesqs approximation have been considered. The results are presented for both cross and single-sided naturally ventilated rooms by using Grid independence test
Hyun-min Yang - One of the best experts on this subject based on the ideXlab platform.
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Long-term corrosion performance of blended cement concrete in the marine environment – A real-time study
Construction and Building Materials, 2017Co-Authors: Seung-jun Kwon, Han-seung Lee, Subbiah Karthick, Velu Saraswathy, Hyun-min YangAbstract:Abstract Blended cement is widely used in critical structures mainly because of its enhanced corrosion resistance concerning its durability. This paper presents the long term corrosion performance of blended cements namely; Portland pozzolana cement (PPC) and Portland slag cement (PSC) concrete under the three marine exposure conditions such as, Atmospheric Zone (AZ), immersion Zone (IZ) and splash Zone (SZ). Offshore Platform Marine Electrochemistry Center (OPMEC), Tuticorin, Tamil Nadu, India was selected as an exposure station. The concrete cubes were exposed over the period of 10 years and their physicochemical properties such as compressive strength, alkalinity, free chloride content and sulphate content, bio-fouling attachment and electrochemical properties like, AC-impedance and potentiodynamic polarization were carried out and the results obtained were compared with Ordinary Portland Cement (OPC) concrete. XRD and SEM studies were also carried out for both OPC, PPC and PSC concrete samples exposed under various Zones. It was observed that the strength and alkalinity of the blended cement concretes were relatively equal to that of OPC concrete. In addition, the pH values of the blended cement concretes are above the threshold limit recommended for depassivation. Furthermore, the resistance to chloride ion penetration was significantly reduced for blended cement concretes than that of OPC concrete and also exhibited very high amount of bio-fouling attachment. The electrochemical studies revealed that the blended cement concretes are having higher corrosion resistance in all three exposure Zones than that of OPC concrete. From the results it is observed that the blended cement concretes are technically viable from the durability point of view and highly recommended for aggressive marine environments rather than OPC concrete.
Seung-jun Kwon - One of the best experts on this subject based on the ideXlab platform.
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Long-term corrosion performance of blended cement concrete in the marine environment – A real-time study
Construction and Building Materials, 2017Co-Authors: Seung-jun Kwon, Han-seung Lee, Subbiah Karthick, Velu Saraswathy, Hyun-min YangAbstract:Abstract Blended cement is widely used in critical structures mainly because of its enhanced corrosion resistance concerning its durability. This paper presents the long term corrosion performance of blended cements namely; Portland pozzolana cement (PPC) and Portland slag cement (PSC) concrete under the three marine exposure conditions such as, Atmospheric Zone (AZ), immersion Zone (IZ) and splash Zone (SZ). Offshore Platform Marine Electrochemistry Center (OPMEC), Tuticorin, Tamil Nadu, India was selected as an exposure station. The concrete cubes were exposed over the period of 10 years and their physicochemical properties such as compressive strength, alkalinity, free chloride content and sulphate content, bio-fouling attachment and electrochemical properties like, AC-impedance and potentiodynamic polarization were carried out and the results obtained were compared with Ordinary Portland Cement (OPC) concrete. XRD and SEM studies were also carried out for both OPC, PPC and PSC concrete samples exposed under various Zones. It was observed that the strength and alkalinity of the blended cement concretes were relatively equal to that of OPC concrete. In addition, the pH values of the blended cement concretes are above the threshold limit recommended for depassivation. Furthermore, the resistance to chloride ion penetration was significantly reduced for blended cement concretes than that of OPC concrete and also exhibited very high amount of bio-fouling attachment. The electrochemical studies revealed that the blended cement concretes are having higher corrosion resistance in all three exposure Zones than that of OPC concrete. From the results it is observed that the blended cement concretes are technically viable from the durability point of view and highly recommended for aggressive marine environments rather than OPC concrete.
Han-seung Lee - One of the best experts on this subject based on the ideXlab platform.
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Long-term corrosion performance of blended cement concrete in the marine environment – A real-time study
Construction and Building Materials, 2017Co-Authors: Seung-jun Kwon, Han-seung Lee, Subbiah Karthick, Velu Saraswathy, Hyun-min YangAbstract:Abstract Blended cement is widely used in critical structures mainly because of its enhanced corrosion resistance concerning its durability. This paper presents the long term corrosion performance of blended cements namely; Portland pozzolana cement (PPC) and Portland slag cement (PSC) concrete under the three marine exposure conditions such as, Atmospheric Zone (AZ), immersion Zone (IZ) and splash Zone (SZ). Offshore Platform Marine Electrochemistry Center (OPMEC), Tuticorin, Tamil Nadu, India was selected as an exposure station. The concrete cubes were exposed over the period of 10 years and their physicochemical properties such as compressive strength, alkalinity, free chloride content and sulphate content, bio-fouling attachment and electrochemical properties like, AC-impedance and potentiodynamic polarization were carried out and the results obtained were compared with Ordinary Portland Cement (OPC) concrete. XRD and SEM studies were also carried out for both OPC, PPC and PSC concrete samples exposed under various Zones. It was observed that the strength and alkalinity of the blended cement concretes were relatively equal to that of OPC concrete. In addition, the pH values of the blended cement concretes are above the threshold limit recommended for depassivation. Furthermore, the resistance to chloride ion penetration was significantly reduced for blended cement concretes than that of OPC concrete and also exhibited very high amount of bio-fouling attachment. The electrochemical studies revealed that the blended cement concretes are having higher corrosion resistance in all three exposure Zones than that of OPC concrete. From the results it is observed that the blended cement concretes are technically viable from the durability point of view and highly recommended for aggressive marine environments rather than OPC concrete.