This course material is used in two courses in the International Master’s programmeAppliedMechanics at Chalmers. The two courses are TME225 Mechanics of fluids (Chapters 1-10), and MTF270 Turbulence Modeling (Chapters 11-27). MSc students who follow these courses are supposed to have taken one basic course in fluid mechanics. The lecture notes are also used in the three-day course Unsteady Simu...

The objective of this work is to show a procedure for mesh generation in a fluidized bed using large eddy simulations (LES) of a filtered two-fluid model. The experimental data were obtained by [1] in a laboratory fluidized bed. Results show that it is possible to use mesh with less cells as compared to RANS turbulence model with granular kinetic theory flow (KTGF). Also, the numerical results ...

Xiao and Jenny (2012) proposed an interesting hybrid LES/RANS method in which they use two solvers solve the RANS LES equations entire computational domain. In present work this is simplified used as a RANS-LES method, wall-modeled LES. The are employed Near walls, flow governed by steady solver; drift terms added to DES ensure that time-averaged fields agree with field. Away from region, field...

The use of the high-order Flux Reconstruction (FR) spatial discretization scheme for LES on unstructured meshes is investigated. Simulations of the compressible Taylor-Green vortex at Re = 1600 demonstrate that the FR scheme has low numerical dissipation and accurately reproduces the turbulent energy cascade at low resolution, making it ideal for high-order LES. To permit the use of subgrid-sca...

The paper presents a synthetic turbulence generator (STG) for the lattice Boltzmann method (LBM) at interface of Reynolds averaged Navier–Stokes (RANS) equations and LBM large eddy simulation (LES). We first obtain RANS velocity field from finite volume solver interface. Then, we apply numerical interpolation to due different grid types LBM. STG generates fluctuations, regularized reconstructs ...

نوآوری در نتیجه ترکیبی از عناصر دانش سازمان‌ها ظاهر شده و به‌عنوان ماده خام اصلی برای نظر گرفته می‌شود. روش‌های سنتی دیگر اثربخش نیست به رویکردهای جدید همچو نیاز است. هدف پژوهش حاضر ، بررسی تأثیر قابلیت‌های مدیریت بر عملکرد با اثر میانجی باز است که 25 واحد‌ فناور مستقر «پارک فناوری پردیس» واقع شهر پردیس استان تهران نیمه دوم سال 1399 موردبررسی قرار گرفت. به‌منظور جمع‌آوری داده‌ها ابزار پرسشنامه ...