On the Use of Power Laws for Estimates of Wind Power Potential

Peterson, Ernest W.; Hennessey, Joseph P.

doi:10.1175/1520-0450(1978)017<0390:otuopl>2.0.co;2

Cited by 230 publications

(129 citation statements)

References 0 publications

Supporting

Mentioning

122

Contrasting

Unclassified

Order By: Relevance

“…Moreover, the logarithmic law was introduced by Stull [21] and contains a thermal correction factor that models the impact of thermally-induced wind movement. Moreover, in the fields of wind engineering and environmental aerodynamics, the power law, which was originally introduced by Hellmann [22], is considered pertinent [23].…”

Section: Modeling Of the Atmospheric Boundary Layermentioning

confidence: 99%

Improving Natural Ventilation Conditions on Semi-Outdoor and Indoor Levels in Warm–Humid Climates

Bayoumi¹

2018

Buildings

View full text Add to dashboard Cite

Building form and facade development for energy saving and generation are of great importance. Further development for natural ventilation purposes is also imperative as it is related to many issues that affect the quality of the living and working environment inside and around the buildings in outdoor and semi-outdoor spaces. In rapidly developing regions experiencing a warm and humid climate, like Saudi Arabia, mechanical cooling and ventilation are commonly used in residential and non-residential buildings. However, this was not the case in traditional structures, like the massive coral buildings of Jeddah, where cooling essentially depended on cross ventilation and heat storage in thermal mass. Further, the building forms in the traditional oriental city were optimized for natural ventilation on the macro-and micro-urban and room scales, respectively. Owing to the advancement in air-conditioning technology, conventional building design approaches tend to encourage sealed indoor spaces that rarely interact with the outdoor environment. Even in such harsh climates, during many months in a year, the outdoor temperature is remarkably low, allowing the utilization of natural ventilation within the rooms, as well as between building complexes and the surrounding spaces. This optimization process requires the integrated planning of many aspects, such as the facade, building form, as well as the intermediate threshold spaces between the indoor and outdoor spaces. Non-residential buildings in Saudi Arabia require a large amount of energy for operation. This is mainly due to the relatively high cooling demand caused by internal loads. A hybrid cooling system that incorporates mechanical and natural cooling and ventilation can be implemented for low-temperature days and nights. This paper presents a method for saving energy in a university faculty building, which is located in Jeddah. Models of the proposed solutions were analyzed using a computational fluid dynamics simulation tools, as well as the dynamic building simulation tool IDA-Indoor Climate and Energy (IDA-ICE) to assess user comfort and the level of reduction in energy demand.

show abstract

Section: Modeling Of the Atmospheric Boundary Layermentioning

confidence: 99%

Improving Natural Ventilation Conditions on Semi-Outdoor and Indoor Levels in Warm–Humid Climates

Bayoumi¹

2018

Buildings

View full text Add to dashboard Cite

show abstract

“…The velocity profile of the wind followed the principle of increasing with altitude, as defined by Deacon's equation, Eq. (6) (Peterson and Hennesse, 1977),…”

Section: Meteorological Conditionsmentioning

confidence: 99%

Formation and Dispersion of Nitric Acid Vapor from Stack Flue Gas

Park¹,

Wu²,

Jo³

et al. 2014

Asian J. Atmos. Environ

View full text Add to dashboard Cite

Extreme recovery of the thermal energy from the combustion of flue gas may bring about early gas condensation resulting in the increased formation of nitric acid vapor. The behavior of the nitric acid formed inside the stack and in the atmosphere was investigated through a computer-aided simulation in this study. Low temperatures led to high conversion rates of the nitrogen oxide to nitric acid, according to the Arrhenius relationship. Larger acid plumes could be formed with the cooled flue gas at 40� � C than the present exiting gas at 115� � C. The acid vapor plume of 0.1 ppm extended to 25 m wide and 200 m high. The wind, which had a seasonal local average of 3 m/s, expanded the influencing area to 170 m along the ground level. Its tail stretched 50 m longer at 40� � C than at 115� � C. The emission concentration of the acid vapor in the summer season was a little lower than in the winter. However, a warm atmosphere facilitated the Brownian motion of the discharged flue gas, finally leading to more vigorous dispersion.

show abstract

“…In both coarse and fine model domains, apart from the tides, wind data measured at Dona Paula (Goa) coastal station using an automatic weather station (AWS) were also applied as input for the simulations. Wind data measured at 43.5 m height were reduced to 10 m height using the power law-a method for extrapolating the wind speeds between two heights (Peterson and Hennessey 1978). Winds are assumed to be uniform over the whole domain.…”

Section: Hydrodynamic Modellingmentioning

confidence: 99%

Barnacle larval transport in the Mandovi–Zuari estuarine system, central west coast of India

et al. 2013

View full text Add to dashboard Cite

A two-dimensional hydrodynamic and particle tracking model was used to estimate the dispersion and retention of barnacle larvae from their possible spawning sites in a tropical monsoon-influenced estuarine system (central west coast of India). Validation of the hydrodynamic simulations yielded a good match with field measurements. The pattern of larval dispersal in the region varied with the winds and currents. The seasonal changes in abundance could be attributed to physical forcing and weather conditions. The extent of barnacle larval dispersal from spawning sites varied from 10 to 78 km for different sites and seasons. During a 24-h cycle, the larval abundance showed one to two peaks in the estuarine area. The increased larval abundance is favored by the flood currents, pushing the larvae into the estuary. Physical forcing in the region helps in transport of the larvae from their spawning sites hugging to the coast and contributing to the population within the estuary. Field observations and numerical experiments suggest the occurrence of higher larval abundance in the estuary during post-monsoon. The dispersal pattern indicated that the barnacle population present in the estuary is well mixed, and with a seasonally changing pattern.

show abstract

On the Use of Power Laws for Estimates of Wind Power Potential

Cited by 230 publications

References 0 publications

Improving Natural Ventilation Conditions on Semi-Outdoor and Indoor Levels in Warm–Humid Climates

Improving Natural Ventilation Conditions on Semi-Outdoor and Indoor Levels in Warm–Humid Climates

Formation and Dispersion of Nitric Acid Vapor from Stack Flue Gas

Barnacle larval transport in the Mandovi–Zuari estuarine system, central west coast of India

Contact Info

Product

Resources

About