Brochures

Industry Solutions Prediction of heat transfer distribution in a shell and tube heat exchanger Courtesy of Flow Dynamics Hellas & Proodos Boilers. Prediction of wetness dispersion under non-equilibrium conditions for quantifica- tion of thermo-dynamic performance in a low-pressure steam turbine Courtesy Siemens AG. Particle tracking functionality used to simulate the fertilization of kiwifruit by blowing pre-collected pollen onto the flowers Courtesy University of Canterbury. The ANSYS CFX Solver At the heart of ANSYS CFX software is its advanced solver technology using coupled algebraic multigrid, the key to achieving reliable and accurate solutions quickly and robustly. Its engineered scalability ensures a linear increase in CPU time with problem size and parallel performance that is second to none. Users can follow convergence progress and dynami- cally monitor numerical and physical solution quantities. Solver parameters, boundary conditions and other parameters can be adjusted 'on the fly,' with- out stopping the solver. The ANSYS CFX solver uses second order numerics by default, ensuring users always get the most accurate predictions possible. All simulations, whether for rotating machinery, multiphase flows, combustion or any other physical model, benefit enormously from the coupled solver technology in ANSYS CFX software to achieve robust and scalable flow solutions. Parallelization: The ANSYS CFX solver was designed from the ground up for maximum parallel efficiency. This deep-rooted characteristic has become all the more essential since the advent of multicore processors and cluster computing. With impressive CPU and memory scaling ANSYS CFX software is inherently prepared for the continued evolution of computing power. All physical models in the ANSYS CFX solver work in parallel, without exception. Physical Models: The fidelity of simulation is linked directly to the choice of physical models available. ANSYS CFX software contains unequalled breadth and unparalleled depth of physical models to satisfy the needs of a wide variety of industrial applications. More importantly, a complete fea- ture matrix ensures maximum interaction among physical models with all element types and across all grid interface connection types to allow comprehensive multiphysics simulations. The following are some of the most important physical models available in ANSYS CFX software. Turbulence: The vast majority of industrial flows are turbulent. Therefore, ANSYS CFX software has always placed special emphasis on providing and developing state-of-the-art turbulence models to capture the effects of turbulence efficiently and accurately. In addition to all common RANS models — such as k-ε, k-ω, SST and Reynolds-Stress models — and scale- resolving LES and DES models, ANSYS CFX software delivers numerous significant turbulence modeling innovations. These innovations include SST model extensions to capture effects like streamline curvature, a predictive laminar-to-turbulent transition model (the Menter-Langtry γ−θ model™) and the novel scale-resolving Scale-Adaptive Simulation™ (SAS) model for flows in which steady-state turbulence models are insufficient. Rotating Machinery: ANSYS CFX software has continuously shown leader- ship in CFD simulation for rotating machinery. It is a leader in a field where the demands in terms of accuracy, speed and robustness are among the very highest. From a full suite of models to capture the interaction between rotating and stationary components, to tailored turbomachinery pre- and post-processing environments, ANSYS CFX software completely satisfies the needs of turbomachinery fluid dynamics analysts. It is further complemented by ANSYS ® BladeModeler™ and ANSYS ® TurboGrid™, geometry and mesh generation tools made expressly to meet the needs of turbomachinery designers and analysts.

• Cover