Pressure coefficient ≈ Pressure coefficient
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Numerical simulation of the effects of building dimensional variation on wind pressure distribution Open
Knowledge of wind effects is of great significance in structural, environmental, and architectural fields, where excessive relevance among wind pressure, building load, and natural ventilation has been formerly confirmed. Within the scope …
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Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation Open
Roof shape and slope are both important parameters for the safety of a structure, especially when facing wind loads. The present study demonstrates the pressure variations due to wind load on the pyramidal roof of a square plan low-rise bu…
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Wind effects on ‘Z’ plan-shaped tall building: a case study Open
The present paper is centered on the study to understand the behavior of various surfaces of a 'Z' plan-shaped tall building under varying wind directions. For that purpose, computational fluid dynamics (CFD) package of ANSYS is used. The …
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Effect of Blade Pitch Angle on the Aerodynamic Characteristics of a Straight-bladed Vertical Axis Wind Turbine Based on Experiments and Simulations Open
The blade pitch angle has a significant influence on the aerodynamic characteristics of horizontal axis wind turbines. However, few research results have revealed its impact on the straight-bladed vertical axis wind turbine (Sb-VAWT). In t…
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Interpretation of Machine-Learning-Based (Black-box) Wind Pressure Predictions for Low-Rise Gable-Roofed Buildings Using Shapley Additive Explanations (SHAP) Open
Conventional methods of estimating pressure coefficients of buildings retain time and cost constraints. Recently, machine learning (ML) has been successfully established to predict wind pressure coefficients. However, regardless of the acc…
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Investigation of LaAlO<sub>3</sub> pervoskite compound for optoelectronic and thermoelectric devices under pressure Open
The electronic, optical and thermoelectric properties of LaAlO 3 are studied under different pressure ranges (0–40 GPa) by using the full potential linear augmented plane wave method (FP-LAW). Calculations are done by Perdew–Burke–Ernzerho…
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Numerical Study of the Normal Impinging Water Jet at Different Impinging Height, Based on Wray–Agarwal Turbulence Model Open
As a kind of water jet technology with strong impinging force and simple structure, the submerged impinging water jet can produce strong scouring action on subaqueous sediments. In order to investigate the flow field characteristics and im…
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Experimental Investigation on the Performance of NACA 4412 Aerofoil with Curved Leading Edge Planform Open
Aircraft wings are the lifting surfaces with the chosen aerofoil sections. The efficiency as well as the performance of an aircraft mostly depends on the aerodynamic characteristics e.g. lift, drag, lift to drag ratio, etc of wings. Beside…
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Comparative study of international codes wind loads and CFD results for low rise buildings Open
The structural design of the building includes the calculation of the applied wind loads as one of the major items in the design process. The available codes data for the listed structures in these codes extracted from wind tunnel experime…
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Local resistance characteristics of elbows for supercritical pressure RP-3 flowing in serpentine micro-tubes Open
Based on the demands of compact heat exchangers and micro cooling channels applied for aviation thermal protection on aero-engines, the elbow local flow resistance characteristics for supercritical pressure aviation fuel RP-3 flowing in ad…
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Numerical investigation of earth pressure coefficient along central line of backfilled stopes Open
The earth pressure coefficient K, defined as the horizontal to vertical normal (effective) stresses ratio (σ h /σ v ), is a key parameter in analytical solutions for estimating the stresses in backfilled stopes. In the case of vertical sto…
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CFD analysis of an exceptional cyclist sprint position Open
© 2019, The Author(s). A few riders have adopted a rather exceptional and more aerodynamic sprint position where the torso is held low and nearly horizontal and close to the handle bar to reduce the frontal area. The question arises how mu…
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Analysis of Flow over a Circular Cylinder Fitted with Helical Strakes Open
The effectiveness of the helical strakes in suppressing the vortex-induced vibration (VIV) of a rigid cylinder is investigated by providing a three start helical strakes around a circular cylinder at two Reynolds numbers (100&28000). While…
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Time-dependent safety of lining structures of circular tunnels in weak rock strata Open
Following tunnel excavation and lining completion, fractured surrounding rock deforms gradually over time; this results in a time-dependent evolution of the pressure applied to the lining structure by the surrounding rock. Thus, the safety…
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Aerodynamic Shape Optimization of NREL S809 Airfoil for Wind Turbine Blades Using Reynolds-Averaged Navier Stokes Model—Part II Open
Sustainability has become one of the most significant considerations in everyday work, including energy production. The fast-growing trend of wind energy around the world has increased the demand for efficient and optimized airfoils, which…
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CFD Modeling of Wind Turbine Blades with Eroded Leading Edge Open
The present work compares 2D and 3D CFD modeling of wind turbine blades to define reduced-order models of eroded leading edge arrangements. In particular, following an extensive validation campaign of the adopted numerical models, an initi…
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Study of Pressure Distribution on an Irregular Octagonal Plan Oval-Shape Building Using CFD Open
This paper aims to study the wind flow characteristics and to analyze the wind pressure distribution on the surfaces around an irregular octagonal plan shape building model. There is a central open space in plan to provide more surface are…
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Accurate RANS Simulation of Wind Turbine Stall by Turbulence Coefficient Calibration Open
Stall, a complex phenomenon related to flow separation, is difficult to be predicted accurately. The motivation of the present study is to propose an approach to improve the simulation accuracy of Reynolds Averaged Navier–Stokes equations …
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Mechanism of pressure management by injecting nitrogen in casing annulus of deepwater wells Open
The influence factors of annular pressure buildup are analyzed, and the temperature and pressure characteristics of annulus trap medium are simulated for deepwater wells. The method of pressure management by injecting nitrogen in casing an…
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Aerodynamic drag determination of a full-scale cyclist mannequin from large-scale PTV measurements Open
The aerodynamic drag of a human-scale wind tunnel model is obtained from large-scale particle tracking velocimetry measurements invoking the conservation of momentum in a control volume surrounding the model. Lagrangian particle tracking i…
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Flow characteristics in low-speed wind tunnel contractions: Simulation and testing Open
A numerical and experimental study was conducted to characterize flow through low-speed wind tunnel contractions. The simulations were carried out using an incompressible, two-dimensional flow solver based on finite volume scheme, predicti…
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Effect of 3D stall-cells on the pressure distribution of a laminar NACA64-418 wing Open
A 3D stall-cell flow-field has been studied in a 4.8 aspect-ratio wing obtained by linear extrusion of a laminar NACA64-418 airfoil profile. The span-wise change in the velocity and pressure distribution along the wing has been quantified …
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Moving Model Test of High-Speed Train Aerodynamic Drag Based on Stagnation Pressure Measurements Open
A moving model test method based on stagnation pressure measurements is proposed to measure the train aerodynamic drag coefficient. Because the front tip of a high-speed train has a high pressure area and because a stagnation point occurs …
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Flow pressure evaluation on generic surfaces by robotic volumetric PTV Open
An experimental approach for the measurement of the time-average fluid flow pressure over the surface of generic three-dimensional objects is presented. The method is based on robotic volumetric PTV measurements followed by the integration…
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Hidden spin-polarized bands in semiconducting 2H-MoTe<sub>2</sub> Open
We present experimental and theoretical studies of the electronic band structure of 2H-MoTe2 at high hydrostatic pressures. Photoreflectance measurements allowed the determination of the pressure coefficient of the direct transitions A and…
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Aerodynamic performance analysis of a trailing-edge flap for wind turbines Open
In this paper, a trailing-edge flap is designed based on the wind turbine airfoil S809. The aerodynamic performance and flowfield of the proposed trailing-edge flap airfoil are predicted by computational fluid dynamics (CFD) at angles of a…
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Experimental investigation on the effect of the duct geometrical parameters on the performance of a ducted wind turbine Open
This paper reports an experimental investigation on the effect of the duct geometry on the aerodynamic performance of an aerofoil shaped ducted wind turbine (DWT). The tested two-dimensional model is composed of an aerofoil equipped with p…
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Prediction of Collapse Scope of Deep-Buried Tunnels Using Pressure Arch Theory Open
Tunnel collapse remains a serious problem in practice. Effective prediction methods on tunnel collapse are necessary for tunnel engineering. In this study, systematic study on the pressure arch was presented to predict tunnel collapse. Mul…
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Three Dimensional CFD Simulations of A Wind Turbine Blade Section; Validation Open
The purpose of present study is to approve use of ANSYS software as a tool for wind turbine simulations.Based on workbench platform designmodeler, mechanical mesh and fluent components, the study attempts to reproduce experimental measurem…
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Research on Flows for NACA 2412 Airfoil using Computational Fluid Dynamics Method Open
The comparison between incompressible and compressible flow for aerodynamic coefficients and flow characteristics has been made for NACA 2412 airfoil. The FEM is used to obtain results. The fluid domain of 10C has been constructed to initi…