@article{b3463d1b-a4d5-4e23-86ce-755daaffaa15, author = {Tomasz Nowicki}, title = {The Discrete Vortex Method for estimating how surface roughness affects aerodynamic drag acting on a long cylinder exposed to wind}, journal = {Technical Transactions}, volume = {2015}, number = {Budownictwo Zeszyt 2-B (12) 2015}, year = {2015}, issn = {0011-4561}, pages = {127-144},keywords = {wind engineering; discrete vortex method; surface roughness; aerodynamic force; aerodynamic drag}, abstract = {This paper focuses on the aerodynamic drag force that acts on a long cylinder standing up to aerodynamic wind in the critical regime of the fluid flow. The core problem addressed here is how surface roughness of a high level and further increase of that level affects the drag. The research is based on computer simulations using the Discrete Vortex Method. A meshless version of the method was applied in order to let the boundary layer form freely in the way of a direct computer simulation. Fundamental ideas behind the Discrete Vortex Method, the original research program and the obtained results are presented. The main conclusion is that a small level of surface roughness may be neglected in engineering estimations.}, doi = {10.4467/2353737XCT.15.129.4166}, url = {https://ejournals.eu/en/journal/czasopismo-techniczne/article/the-discrete-vortex-method-for-estimating-how-surface-roughness-affects-aerodynamic-drag-acting-on-a-long-cylinder-exposed-to-wind} }