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Simulation Software & Services for Power Generation

Nuclear Power Generation

ANSYS software for nuclear powerSince its inception in the early 1970's, ANSYS FEA and CFD software has been the preferred engineering simulation software in the nuclear power industry, as it provides the FEA and CFD tools required to meet the rigorous design, engineering and regulatory challenges of the nuclear industry as well as standards such as ASME NQA-1, Quality Assurance Requirements for Nuclear Facility Applications, ASME Boiler & Pressure Vessel Code Section III, Subsection NF and ISO-9001.

With its long-term association with ANSYS software, SimuTech has been providing FEA and CFD software and consulting services to the nuclear power industry for decades. SimuTech has an internal QA program developed to the standards of ASME NQA-1. This QA plan was developed in preparation for a large Div1/Div2 stress analysis project for a 1st tier designer/supplier of nuclear pressure vessel equipment.

CFD software
Containment Building Reinforcement
ANSYS software
Generator Pedestal
FEA software
Core Duct

Our engineers have considerable experience in the nuclear power industry, including small and large ASME pressure vessel analysis projects. Contact us today - we would be glad to discuss your needs.

SimuTech Consulting Projects in the Nuclear Power Industry:

  • Crash test of nuclear waste containers falling from moving rail car
  • Plutonium & Uranium (PUREX) waste sludge extraction device structural analysis: Remote attach assembly mechanism for slip fit
  • ASME Section III, Subsection NB Structural/Thermal Evaluation: Evaluation of steam generator primary head for all plant operating conditions plus seismic
  • Heavy Lift Load Evaluation per ANSI 14.6 Standard
  • Turbine Blade Dynamic Evaluation of Fundamental Frequencies
  • Steam Generator Drop Evaluation: Determination of Potential Damage due to Lifting Equipment Failure

engineering simulation software
Unit Pressure Load
FEA consulting
Temperature Distribution
nuclear power generation
Thermal Stresses

ANSYS software
Small Lifting Lug with Weld Modeled
ANSYS consultant
Large Lifting Lug Attached to the Side of a Heavy Wall Vessel

steam turbine failures
Exterior Shell
steam turbine root cause analysis
Interior Flow Shroud
steam turbine failure
Tube Supports

engineering simulation software for nuclear power

Design ElementChallengesSimulation Benefits
  • Determining accurate seismic loads and responses
  • Providing accurate safety analyses to regulators
  • Estimating hydrogen release hazards
  • Avoid over-designing by performing accurate seismic analyses
  • Accident simulation when 1-D tools are insufficient
    • Impact of accidents on structural integrity
    • Fracture mechanics
    • Emergency core cooling system behavior
    • Showing jet-strike survivability
    • Hydrogen dispersion within containment
Coolant Pumps
  • Cavitation
  • Installation effects not taken into account by original design
  • Understanding performance in off-design (start-up and accident) conditions
  • Understand the impact of installation effects before deployment
  • Optimize performance by determining inlet and outlet flow angles and separation patterns
  • Reduce the number of hardware prototypes needed in the pump design and installation process
  • Allows parametric investigation of scale-up effects for these extremely large pumps, which is not possible through testing, but straightforward with simulation.
Reactor Pressure Vessels
  • Safety analysis for complex stratified flow
  • Code-checking for stress analysis in a timely fashion
  • Supply regulators with thermal hydraulic predictions for a wide range of LOCA scenarios
  • Stratification caused by thermal variations across cold legs
  • Use a pressure vessel design tool with built-in code checks
Fuel Assemblies
  • Designing for seismic safety without over-designing
  • Optimizing for thermal transfer in operating and LOCA conditions
  • Designing for flow-induced vibration
  • Limiting cladding fretting and wear
  • Reduce design time and physical prototypes through simulation
  • Spring design
  • Assembly seismic vibration analysis
  • Mixing vane design
  • Fluid-structure interaction simulation
  • Designing steam generation and spray cooling system for optimal responsiveness to pressure changes
  • Design time for code checks
  • Cost savings through virtual prototyping of new designs and troubleshooting for existing units
    • Heat transfer and phase change due to heating
    • Natural circulation
    • Spray distribution
    • Local condensation rates
  • Rapid vessel design with built-in code checks
Steam Generators
  • Tube vibration
  • Accident analysis under natural convection conditions
  • Design for optimal heat transfer
  • Reduce expensive and time-consuming scaled test loop experiments
    • Investigate and optimize tube vibration sensitivity to flow conditions
    • Extend test results from experimental to full scale conditions
    • Confirm results from system level tools
    • Investigate installation effects
Passive Safety Systems
  • Inaccuracy of system-level tool safety analyses when natural circulation and mixing are fundamental to the process
  • Scale-up of parametric relationships from lab to full size
  • Gain physical insight about flow structures to guide safety system design
  • Generate new parametric relationships to embed in system-level tools
  • Extend behavior prediction from experimental to full scale conditions
Generation IV Reactors
  • Modeling high temperature gaseous flows (sometimes involving chemical reactions) with codes designed for water and steam
  • Modeling natural circulation and mixing in 1-D
  • Scale-up of parametric relationships from lab to full size
  • Model the full flow physics of gas-cooled reactors
  • Gain physical insight about flow structures to guide safety system design
  • Generate new parametric relationships to embed in system-level tools
  • Extend behavior prediction from experimental to full scale conditions
Waste Storage and Handling
  • Meeting regulatory requirements for repositories and transport and storage devices
    • Thermal management
    • Structural impacts
  • Cost-efficient design and troubleshooting of storage devices and repositories to comply with regulatory requirements
    • Structural integrity during container impact
    • Cooling efficiency from forced or natural convection and conduction
    • Pool fire thermal predictions