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Power generation CFD and advanced engineering

Navier provides high-fidelity Computational Fluid Dynamics (CFD), thermal analysis and system-level modelling to support gas-turbine operators, OEMs, EPCs and plant-engineering teams. We help improve reliability, reduce operating risk and optimise performance across intake systems, exhaust and SCR units, enclosure ventilation, HRSGs and balance-of-plant equipment. The sections below outline the main areas where we support power generation projects.

Gas turbine intake systems

Reliable turbine performance begins at the inlet. Navier specializes in detailed CFD analysis of intake systems for industrial gas turbines, including:

• Intake filtration and weather louver performance
• Pressure drop prediction and optimization
• Flow uniformity into the compressor bellmouth
• Inlet distortion assessment against OEM guidelines
• Anti-icing nozzle or spray-rake performance
• Turbine Inlet Air Chilling (TIAC) system integration and transient temperature behavior
• Compressor wash nozzle placement and spray-coverage optimization

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Exhaust systems, SCR performance and emissions engineering

Navier provides detailed exhaust-system and emissions-control modelling to support compliant and efficient operation.

Capabilities include:

• Exhaust diffuser and duct performance
• Mapped inflow profiles from engine test or thermodynamic data
• Temperature and velocity distribution into SCR reactors
• AIG optimization and ammonia–air mixing distribution
• Catalyst face uniformity and predicted NOx-reduction performance
• Exhaust stack plume-dispersion analysis following EPA dispersion-modeling guidance
• Recirculation-risk evaluation for air intakes and HVAC systems
• Compliance with EPA Method standards under 40 CFR Part 60 and Part 75 to support for sampling and CEMS port selection

These studies help improve SCR efficiency, reduce ammonia slip and support reliable emissions reporting.

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Enclosure ventilation, ATEX and safety analysis

Navier conducts detailed CFD studies for turbine and generator enclosures, supporting safety-case requirements and equipment-package reviews.

Typical analyses include:

• Internal airflow distribution and hot-spot identification
• Thermal stratification and equipment heat-rejection modelling
• Fuel-gas leak dispersion
• Hazardous-area classification support
• Ventilation effectiveness assessment aligned with ISO 21789
• Reference to HSE PM84 for enclosure ventilation and leak scenarios
• Gas-detector placement and sensitivity analysis

These studies support both new package designs and operational troubleshooting.

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HRSG, heat recovery and balance of plant modelling

Navier supports reliable HRSG and balance-of-plant operation with detailed CFD and thermal modelling.

Capabilities include:

• HRSG inlet flow distribution and mixing
• Thermal maldistribution and tube-bank loading
• Ductwork and diffuser optimization
• Conjugate heat-transfer assessments for insulation systems
• Transient thermal behavior during startup and shutdown
• Integration with 1D heat-balance tools
• Alignment with recognized ASME PTC guidance for thermal-performance evaluation

These models help identify causes of high thermal gradients, fatigue risk and long-term degradation.

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EPC design support and plant integration

Navier helps EPC firms and plant engineering teams make informed design decisions at both project and operational stages.

Typical support includes:

• Stack–intake interference studies
• Recirculation-risk evaluation for new layouts
• Mechanical-room ventilation and heat-rejection modelling
• Cooling-tower plume interaction with turbine inlets
• Yard-layout optimization
• Pressure drop verification for ducting and filtration
• Thermal performance evaluation during equipment upgrades

These studies support smoother design reviews and reduce rework during installation and commissioning.

Reliable operation depends on well-designed intake, exhaust and ventilation systems. If you need to improve performance, address emissions challenges or resolve thermal or flow-related issues, contact us to discuss how CFD can support your power generation project.