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| 1 | Drag reduction by application of aerodynamic devices in a race car显示文摘In this era of fast-depleting natural resources,the hike in fuel prices is ever-growing.With stringent norms over environmental policies,the automotive manufacturers are on a voyage to produce efficient vehicles with lower emissions.High-speed cars are at a stake to provide uncompromised performance but having strict rules over emissions drives the companies to approach through a different route to keep the demands of performance intact.One of the most sought-after ways is to improve the aerodynamics of the vehicles.Drag force is one of the major setbacks when it comes to achieving high speeds when the vehicle is in motion.This research aims to examine the effects of different add on devices on the vehicle to reduce drag and make the vehicle aerodynamically streamlined.A more streamlined vehicle will be able to achieve high speeds and consequently,the fuel economy is also improved.The three-dimensional car model is developed in SOLIDWORKS v17.Computational Fluid Dynamics(CFD)is performed to understand the effects of these add on devices.CFD is carried out in the ANSYS^(TM) 17.0 Fluent module.Drag Coefficient(CD),Lift Coefficient(CL),Drag Force and Lift Force are calculated and compared in different cases.The result of the simulations was analyzed and it was observed that different devices posed several different functionalities,but maximum drag reduction was found in the case of GT with spoiler and diffuser with a maximum reduction of 16.53%. | Devang S.Nath Prashant Chandra Pujari Amit Jain Vikas Rastogi | 2021 | Advances in Aerodynamics2021，3，1： | 1 |
| 2 | Comparison of the incidence and severity of cough induced by sufentanil and fentanyl: a prospective, randomised, double‐blind study显示文摘 | A.Agarwal S.Gautam S. S.Nath D.Gupta U.Singh | 2007 | Anaesthesia2007，，12： | 1 |
| 3 | Assessment of terrace gardens as modifiers of building microclimate显示文摘Hard concrete roofs cause excessive heat gain impacting thermal comfort in buildings.Terrace gardens promoting greening at higher levels of built structures are seen as one of the key mitigating strategies for modifying building microclimate and improving urban health.We have undertaken a research project to quantitatively assess the value of a terrace garden in a residential scale.A garden patch of about 15 m 2 in area,a typical size available in most urban terraces is developed.Surface temperatures are measured over a period of 15 months between July 2018 to January 2020 using four thermocouple sensors,placed within and outside the garden bed,on and below the roof.We compare the thermal performance of the terrace garden across years,seasons,time of the day,presence or absence of garden bed and type and height of vegetation.The surface temperature data was found to correlate well with the ambient air temperature values.The results show that the terrace garden moderates and stabilises the ceiling temperatures and reduces it by about 2-3°C in winter months and 5-7°C in hot summers.The garden also provided nearly 400 g of fresh monthly vegetable harvest per m 2 of garden.Further,the cooling impact of the terrace garden with natural,tall,wild vegetation is higher as compared to planted vegetation.The study demonstrates a sustainable approach to terrace garden design at residential scale through quantified dual benefits of temperature control within buildings and urban farming. | Chitra Chidambaram Surabhi S.Nath Pranjali Varshney Sakshi Kumar | 2022 | Energy and Built Environment2022，3，1： | 0 |
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