Results 1 to 10 of about 1,282,048 (295)

Experimental Investigation in Drag Coefficient of Cubes

Applied Sciences
Focused on the needs of an accurate drag model for non-spherical particles, a free settling experiment was performed in this paper using the uniformed cube and spliced cube.
Juanjuan Wang, Yue Zhang, Huabing Miao, Jiajia Niu, Daishu Cheng, Mingzhu Chen   +5 more
doaj   +2 more sources

Turbulators and Coefficient of Drag [PDF]

International Scholastic Journal of Science
Turbulators have been shown to reduce the drag force on an object moving through a fluid. The relationship between the number of turbulators and the coefficient of drag of a sphere moving through water is investigated here.
Piyasak Chantabhakdi, Kurit Muangsiri, Imsook Poonvasin, Daniel Vitayatanagorn   +3 more
doaj  

Numerical calculation of boundary layers and wake characteristics of high-speed trains with different lengths. [PDF]

PLoS ONE, 2017
Trains with different numbers of cars running in the open air were simulated using the delayed detached-eddy simulation (DDES). The numbers of cars included in the simulation are 3, 4, 5 and 8.
Lirong Jia, Dan Zhou, Jiqiang Niu
doaj   +1 more source

Calculation and uncertainty analysis method for airfoil drag coefficient considering compressibility

AIP Advances
In order to meet the need of evaluating the effectiveness of airfoil drag reduction design, the calculation and uncertainty analysis method for airfoil drag coefficient considering compressibility is studied.
Yufeng Du, Qiuting Guo, Lulu Wang, Jilong Zhu, Neng Xiong   +4 more
doaj   +1 more source

Optimal Design of an Ecofriendly Pickup Truck Overhang and Roof to Reduce the Drag Coefficient

Applied Sciences
Until now, various studies have been conducted on the drag coefficient of pickup trucks, but little research has been conducted on the effect of the front overhang length and roof design on the drag coefficient.
Min Seok Kim, Yein Bang, Jongwon Kim, Taek Keun Kim   +3 more
doaj   +1 more source

A Comparison of Experimental and Analytical Procedures to Measure Passive Drag in Human Swimming. [PDF]

PLoS ONE, 2015
The aim of this study was to compare the swimming hydrodynamics assessed with experimental and analytical procedures, as well as, to learn about the relative contributions of the friction drag and pressure drag to total passive drag. Sixty young talented
Tiago M Barbosa, Jorge E Morais, Pedro Forte, Henrique Neiva, Nuno D Garrido, Daniel A Marinho   +5 more
doaj   +1 more source

Evaluation drag coefficients for circular patch vegetation with different riverbed roughness

Cogent Engineering, 2022
The drag coefficient of a one-line circular patch of emergent sparse vegetation in an open-channel flow or riverbeds with varying bed roughness sizes was experimentally investigated.
Karim R. Gubashi, Saad Mulahasan, Mohammed Abid Jameel, Abdul-Sahib T. Al-Madhhachi   +3 more
doaj   +1 more source

Computation of drag and diffusion coefficient for coronavirus: I

Journal of Aerosol Science, 2021
Monte Carlo simulations and integral equation techniques allow for the flexible and efficient computation of drag and diffusion coefficients for virus mimetic particles. We highlight a Monte Carlo method that is useful for computing the drag on biomimetic particles in the free-molecular regime and a numerical technique to solve a boundary integral ...
Nathan White, John-David Seelig, Sudarshan K. Loyalka   +2 more
openaire   +2 more sources

Determination Of The Surface Drag Coefficient

Boundary-Layer Meteorology, 2001
This study examines the dependence of the surface drag coefficienton stability, wind speed, mesoscale modulation of the turbulent flux and method of calculation of the drag coefficient. Data sets over grassland, sparse grass, heather and two forest sites are analyzed.
Mahrt, L., Vickers, D., Sun, Jie Lun, Jensen, N.O., Jorgensen, H., Pardyjak, E., Fernando, H., Sun, J.L.   +7 more
openaire   +2 more sources

Superhydrophobic surfaces on supercritical airfoils: mitigating ice formation and enhancing performance

International Journal of Thermofluids
Superhydrophobic surfaces are characterized by low surface energy and micro- to nano-scale roughness. These properties cause fluids to slide over the surface, thereby reducing drag and adhesion, and resulting in a lower drag coefficient.
Mohammad Sameti, Sahar Ghasemipour, Ebrahim Najafi   +2 more
doaj   +1 more source