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The Validation of Fluid-Elastic Instabilities in a Flexible Rod Bundle using STAR-CCM+ coupled to Abaqus
Fluid-elastic instabilities of a flexible rod bundle in turbulent water cross flow have been well studied in laboratory scale experiments. As a validation, unsteady RANS simulation in STAR-CCM+ are coupled to Abaqus via co-simulation and the results compared to experiments. Because of the strong rod-water coupling, this validation represents a complex test for implicit coupling technique realized in STAR-CCM+. STAR-CCM+ and Abaqus models were constructed based on the description and dimensions provided in the reference documentation.* The rod fastening conditions and properties were tuned to...
Simulation of Selective Catalytic Reduction using DARS 1D Tool
This presentation illustrates a new application of the previously developed 1D transient DARS Catalyst model for the simulation of a Selective Catalytic Reduction (SCR) catalyst. Initially demonstrated for NOx-Storage Catalyst (NSC), the DARS Catalyst model uses a single-channel or a set of representative channels for the simulation. This model is fully valid and employed further for the SCR catalyst. Each channel is discretized into a number of cells. Each cell is treated as a Perfectly Stirred Reactor (PSR) with a thin film layer for washcoat treatment. Three global parameters are used to...
Structure, Extinction & Ignition of Non-Premixed Flames in the Counterflow Configuration
Counterflow burners consist of steady, axisymmetric, laminar flows of two counterflowing reactant streams toward a stagnation plane. These burners can be used to experimentally study and develop detailed chemical mechanisms of combustion under a wide range of conditions. Global flame parameters such as the critical limits of extinction and autoignition, as well as flame structure, including flame temperatures and species concentrations can be measured and tested against established reaction mechanisms using 1D numerical model with known conditions at the duct exits. This presentation is a...
Reacting Flow Applications in STAR-CCM+
We have been expanding our application coverage for reacting flows that require coupling of different processes with a wide-range of length and time scales. We capture these interactions by using a combination of online as well as offline computations that enables us to perform advanced reacting flow calculations incorporating finite-rate chemistry while keeping the computational time manageable. Our models have been extended to work in multi-phase as well as with segregated and coupled flow solvers. Examples from chemical process and combustion applications will be shown that will include...
Integrating Filtration Mechanism with a 3D Diesel Particulate Filter (DPF) Model using STAR-CCM+
A 3D CFD model is developed for analysis of transient soot filtration processes in a conventional wall-flow type Diesel Particulate Filter (DPF). The primary objective of this study is to quantitatively predict the local values of soot filtration parameters, such as porosity, permeability, collection efficiency and deposited soot mass, within isotropically discretized computational domains in the multi-layered filter wall region. Standard CFD codes do not have ability to generate structured meshes with ordered cell index nor allow mathematical recursive operation using user field functions...
The Italian challenge at the Little America’s Cup 2013: Design and analysis method for the C Class prototypes
The Italian challenge at the Little America’s Cup 2013: Design and analysis method for the C Class prototypes
Welcome & Cervélo Keynote
Welcome & Cervélo Keynote
Experimental Validation of STAR-CCM+ for Liquid Container Slosh Dynamics
The NASA Launch Services Program has funded several propellant slosh related projects over the years with the goal of obtaining experimental data to anchor CFD predictions. STAR-CCM+ is used to create a CFD model of water sloshing in an 8” diameter spherical tank. The predictions from this CFD slosh model are compared to experimental data to validate the results. The data compared include slosh natural frequency, damping rate and free surface topology. These important validations allow us to increase our confidence in STAR-CCM+ for use on NASA missions.
An overview of battery simulation
An introduction to batteries is provided, including an overview of the commercial value of batteries sold by chemistry. Opportunities for battery simulation in various markets (automotive, consumer, industrial, etc.) are presented, along with examples of the STAR-CCM+ BSM module and Battery Design Studio.