Fluid injection has been applied in many fields, such as hazardous waste deep well injection, forced circulation in geothermal fields, hydraulic fracturing, and CO2 geological storage. However, current research mainly focuses on geological data statistics and the dominating effects of pore pressure. There are only a few laboratory-conditioned studies on the role of drilling boreholes and the ef...

Depreme dayanıklı yapı tasarımında kat adedi arttıkça, taşıma kapasitesini aşmamak, yatay ötelenmeleri sınırlamak ve çerçeve içi bölme duvarların hasar görmesini engellemek için betonarme perde elemanların kullanımı zorunlu hale gelmektedir. maruz kalmış yapılar incelendiğinde, bazı binalarda yeteri kadar eleman bulunmamasından dolayı, ötelenmelerin sınır değerleri aştığı, daha büyük kesme geri...

the work presented in this paper investigates the causes of size effects in structural-concrete members. it isbased on the use of a finite-element model found to yield realistic predictions of structural-concrete behavior in allcases investigated to date. in fact, the previous use of this model in investigations of size effects in reinforced-concretebeams indicated that such effects reflect the...

cost optimization of the reinforced concrete cantilever soil retaining wall of a given height satisfying some structural and geotechnical design constraints is performed utilizing harmony search and improved harmony search algorithms. the objective function considered is the cost of the structure, and design is based on aci 318-05. this function is minimized subjected to design constraints. a n...

We experimentally investigate a partially shrouded sonic jet (a free-jet shielded by solid wall-extension on one side) exiting from planar nozzle at two different pressure ratio ($\zeta=4$ and $5$). show that the inherent unsteadiness shock-induced flow separation wall emitted noise in far-field is strongly coupled through series of experiments like high-speed schlieren, wall-static pressure, u...

The purpose of this study was to determine the influence of radial motion of an arterial wall on the shear stress that flowing blood imposes on the wall (wall shear stress). Wall shear stress is known to influence endothelial cell function and may play a role in atherogenesis, but its magnitude and distribution in the circulation are not well understood. To simulate arterial wall motion, we use...

Three types of shear stud arrangement, respectively featuring an orthogonal, a radial and a critical perimeter pattern, were evaluated numerically. A numerical investigation was conducted using the finite element software ABAQUS to evaluate their ability to resist punching shear in a flat plate. The finite element analysis here is an application of the nonlinear analysis of reinforced concrete ...

Establishing a restoring force model is fundamental yet critical task for the analysis of structural responses to earthquakes. Such has substantial impact on results. Composite-shear walls with concealed bracings in steel-tube frames (composite-shear walls) offer several advantages, including convenient construction processes, high-bearing capacity, and excellent ductility. In this study, mecha...

We report large-eddy simulation (LES) of turbulent channel flow. This LES neither resolves nor partially resolves the near-wall region. Instead, we develop a special near-wall subgrid-scale (SGS) model based on wall-parallel filtering and wall-normal averaging of the streamwise momentum equation, with an assumption of local inner scaling used to reduce the unsteady term. This gives an ordinary ...