General Industries
CS-001: Gi-Gabriel Automotive Washing
This case study highlights the application of Flownex to optimize the washing process for tubular parts at GI-Gabriel, simulating water flow rates and pressure at nozzles to…
CASE STUDIES
Aerospace
CS-002: MID-AIR REFUELING OF A MIRAGE F1 FIGHTER
This case study describes how Aerosud employed Flownex to model flow rates and refueling sequences in the modified refueling system for the re-engined Mirage F1 Fighter, while also analyzing …
Fossil Fuel Power Generation
CS-003: REGULATOR TEMPERATURE ANALYSIS
This case study examines the use of Flownex to simulate the temperature dynamics of pressure regulators at a gas-fired power station, focusing on their exposure to extreme cold during turbine
hvac
CS-004: CHILLER PLANT CONTROL
This case study demonstrates the control of a three stage chiller plant that cools water in a primary loop, which feeds into a secondary…
Nuclear & SMR
CS-005: HIGH TEMPERATURE GAS COOLED REACTOR STARTUP
This case study demonstrates the dynamic modeling of the High Temperature Gas-Cooled Reactor (HTGR) nuclear power plant (NPP) start-up, showcasing its advantages in safety, economics, and…
Nuclear & SMR
CS-006: FLOW AND HEAT TRANSFER IN A PACKED BED – STEADY STATE
This case study demonstrates the steady-state simulation of the heat transfer through a packed pebble …
Nuclear & SMR
CS-007: FLOW AND HEAT TRANSFER IN A PACKED BED – TRANSIENT
This case study demonstrates the transient simulation of the heat transfer through a packed bed with no forced convection. This case study is applicable to packed pebble beds where only
hvac
CS-008: FINNED TUBE HEAT EXCHANGER – TRANSIENT
This case study demonstrates the transient thermal fluid simulation of a finned tube heat exchanger. The finned tube heat exchanger model …
Nuclear & SMR
CS-009: THE INTERACTION BETWEEN GAS AND PARTICLES
This case study highlights Flownex’s versatility through user coding to model the pneumatic conveying dynamics in the Pebble Bed Modular Reactor’s Fuel Handling System,…
hvac
CS-010: A LOCAL UNDERGROUND AIR-COOLING UNIT
This case study demonstrates how Flownex enabled M-Tech to penetrate the market by showcasing the economic benefits of Air Cooling Units (ACU) through a detailed techno-economic evaluation, revealing efficient cooling
Fossil Fuel Power Generation
CS-011: Coupled Simulation Between 3D CFD and Flownex Applied to Coal-fired Boiler
This case study involves simulations to assess the impact of removing evaporative platens from boilers, aiming to predict changes in steam flow distribution and identify potential hot spots on tubes
Fossil Fuel Power Generation
CS-012: BOILER HEADER CRACKING
This case study explores how Steinmüller used Flownex to dynamically simulate flow and heat transfer over the platen evaporator in a power station boiler, aiming to identify the …
Fossil Fuel Power Generation
CS-013: FUEL OIL DISTRIBUTION
This case study illustrates how Steinmüller used Flownex to simulate a fuel oil distribution network, comparing the current setup with proposed modifications, which enabled efficient design decisions and assessment …
General Industries
CS-014: LARGE RETICULATION NETWORK
This case study addresses the challenges faced by Midvaal Water Company in assessing the performance of its aging reticulation network, focusing on flow rates, pressure drops, and their impact on
Oil & Petrochemical
CS-015: FIRED HEATER PROCESS GAS
This case study discusses how a client in the petrochemical industry sought assistance with thermal fatigue and stress analysis of a fired heater, focusing on transient operating conditions like start-up…
Fossil Fuel Power Generation
CS-016: BOILER TUBE FAILURE THERMOHYDRAULIC ANALYSIS
This case study highlights how Flownex was used, in conjunction with ANSYS, to examine various hypotheses regarding mechanical failures in boiler hopper tubes at an Eskom Power Station, enabling detailed
Fossil Fuel Power Generation
CS-017: TURBINE PROTECTION TWO PHASE FLOW REGIMES
This case study illustrates how Flownex was used for root cause analysis of hazardous movements in distillate lines to a plant deaerator, enabling the identification of preferred two-phase flow …
General Industries
CS-018: COMPRESSOR OPTIMISATION
This case study reviews an AngloGold Ashanti project which facilitated a saving of 2.5 MW by using Flownex® to optimize compressor and piping…
Fossil Fuel Power Generation
CS-019: GENERATOR SEAL OIL SYSTEM
This case study describes how Eskom power utility used Flownex to simulate Hydrogen seal systems, allowing engineers to identify the causes of system trips…
Nuclear & SMR
CS-020: SAVANNAH RIVER REMEDIATION
This case study highlights how Flownex is used for the simulation of the PVV system in the Savannah River Site, …
General Industries
CS-021: BLOW-OFF TEST VALVE ANALYSIS
This case study demonstrates how Flownex is used to design a pipe header system with variable solenoid valves, enabling controlled flow variation…
Oil & Petrochemical
CS-022: NATURAL DRAFT EXHAUST STACK
This case study demonstrates the use of Flownex® to model a natural draft exhaust stack such as those typically used in natural gas combustion processes. A basic stack compound component
hvac
CS-023: MINE VENTILATION
This case study demonstrates the steady-state simulation of a compressed air network used in the mining industry. Compressed air is used widely in the mining industry for the operation of
hvac
CS-024: RADIATOR FLOW BALANCING
This case study demonstrates the capability of Flownex to determine the orifice sizes required to ensure balanced flow in several parallel pipes connected by two headers,…
hvac
CS-025: CHILLED WATER DISTRIBUTION
This case study demonstrates Flownex’s ability to predict the temperature rise in chilled water networks due to…
General Industries
CS-026: WATER HAMMER
This case study demonstrates the capability of Flownex® to simulate the water hammer effect by simulating the sudden closure…
General Industries
CS-027: NATURAL CONVECTION
This case study demonstrates the capability of Flownex to simulate natural convection (buoyancy driven flow). This is done by demonstrating the simulation of natural convection of air through…
Nuclear & SMR
CS-028: FLOW BALANCING
The objective of the simulation is to model the flow rates through the respective distribution holes of the inlet manifold. This was required…
General Industries
CS-029: RESIDENTIAL WATER DISTRIBUTION
This case study demonstrates the steady-state simulation of the fresh water (drinking water) reticulation system in a small village.
Nuclear & SMR
CS-030: HIGH TEMPERATURE GAS COOLED REACTOR CYCLE
This case study demonstrates the steady-state simulation of a High Temperature Gas-Cooled Reactor (HTGR) nuclear power plant (NPP). The HTGR is one of the most promising reactor concepts of the
Nuclear & SMR
CS-031: COMBINED CYCLE POWER PLANT
This case study demonstrates the modeling of a Combined Cycle (CC) power plant of a High Temperature Gas-Cooled Reactor (HTGR).
Nuclear & SMR
CS-032: REACTOR CAVITY COOLING
This case study demonstrates the investigation into the operating characteristics of a Reactor Cavity Cooling System (RCCS) during passive operation. The RCCS is a heat removal system designed to remove
Nuclear & SMR
CS-033: A CLOSED THREE-SHAFT RECUPERATIVE BRAYTON CYCLE
This case study demonstrates a load following transient simulation of the Pebble Bed Micro model (PBMM). The PBMM is a closed three-shaft, recuperative Brayton cycle. It was designed and constructed
hvac
CS-034: VAPOUR COMPRESSION REFRIGERATION SYSTEM
This case study demonstrates the capability of Flownex to balance air distribution systems by determining the orifice sizes or damper opening to ensure required flow at certain points in the
hvac
CS-035: CAPILLARY TUBE
This case study demonstrates the modeling of a capillary tube. Capillary tubes are used as expansion devices on some vapor-compression…
hvac
CS-036: AIR CONDITIONING DISTRIBUTION
This case study demonstrates the capability of Flownex to balance air distribution systems by determining the orifice sizes or damper opening to ensure required flow at certain points in the
Nuclear & SMR
CS-037: INSULATION FLOW BALANCING
This case study investigates the balancing of forced flow through a perforated flow distribution manifold situated between the thermal…
General Industries
CS-038: CONTROL OF FLOWNEX® NETWORK USING SIMULINK
This case study demonstrates how Flownex and Simulink are integrated to perform different parts of a simulation. Integration of Flownex with Simulink is a powerful tool that is regularly used
CS-039: SHELL AND TUBE HEAT EXCHANGER – STEADY STATE
This case study demonstrates the steady-state thermal fluid simulation of a shell and tube heat exchanger. The shell and tube heat exchanger model can also be used in…
Nuclear & SMR
CS-040: Three-Shaft, Pre- and Inter-Cooled Recuperative Brayton Cycle
This case study highlights Flownex’s capability to design, simulate, and validate complex thermodynamic cycles efficiently, as demonstrated in the PBMM project, achieving rapid…
Oil & Petrochemical
CS-041: FLOW MEASUREMENT ORIFICES PLATE SIZING AND UNCERTAINTY ANALYSIS
This case study demonstrates the use of some of Flownex’s power features – the Designer and the Sensitivity Analysis capability – during the design…
CS-042: THE SIZING OF PRESSURE CONTROL AND PRESSURE SAFETY VALVES INCLUDING REACTION FORCE CALCULATION
This case study demonstrates the use of Flownex® to size properly performing pressure control valves for typical plant operation and to size and…
Oil & Petrochemical
CS-043: EXTERNAL HEAT TRANSFER PIPE
This case study demonstrates the implementation of a compound element with external surface heat transfer to or from an external fluid. The heat transfer …
Oil & Petrochemical
CS-044: Fouling Factors in Flownex Heat Transfer Models
This case study demonstrates the implementation of two methods to account for thermal fouling factors in heat transfer piping and tubing…
Fossil Fuel Power Generation
CS-045: MAINTENANCE EFFECTIVENESS COMPARISON FOR A HALF STATION SHUTDOWN OUTAGE
This case study demonstrates how Flownex® can be used in evaluating the effectiveness of the maintenance work conducted during a half station shutdown outage by characterising a unit and comparing
Oil & Petrochemical
CS-046: BASIC IMMERSION FIRETUBE MODEL
This case study demonstrates the implementation of a basic immersion fire-tube model in Flownex and…
Oil & Petrochemical
CS-047: COALESCING FILTER SIZING AND LIFE CYCLE ANALYSIS USING RATED AND SPECIFIED PRESSURE LOSS COMPONENTS
This case study discusses the sizing of a coalescer filter and demonstrates its fouling life cycle analysis using a Flownex® model which implements two new pressure loss components: a rated
Oil & Petrochemical
CS-048: NATURAL GAS COMBUSTION MODELLING
This case study demonstrates the use of Flownex® to model and analyse a natural gas combustion process. Several compound components have been developed to …
Oil & Petrochemical
CS-049: ECONOMIC PIPE SIZING USING THE GENERAUX EQUATION
This case study investigates a pipe sizing method based on an implementation of the Generaux Equation. This method aims to determine the optimum pipe size by…
Oil & Petrochemical
CS-050: FIRED HEATER DESIGN
This case study demonstrates the implementation of an API 560 fired heater compound component in Flownex. It also shows how Flownex® has been used during the process design and preliminary
Oil & Petrochemical
CS-051: PRESSURE PIPING THICKNESS AND FLANGE RATING CALCULATION
This case study demonstrates the use of a script and a Generic 4D chart to enable Flownex® to calculate standards-compliant wall thicknesses and…
Oil & Petrochemical
CS-052: A SIMPLE BARE TUBE CROSS FLOW RECUPERATOR FLOWNEX MODEL
This case study demonstrates the use of Flownex® to model simple recuperators using bare tubes in cross flow.
Fossil Fuel Power Generation
CS-053: RECOVERING GENERATION LOSSES DUE TO FAULTY AIR HEATER OPERATION
This case study highlights how Flownex helped detect a fault in a power plant’s Draught Group, improving generation load by 5% after correction. By comparing the Flownex model with plant
CS-054: Boiler Steam Flow Distribution
This case study used Flownex to investigate flow distribution in a new-generation John Thompson MicroGen Boiler. Steam circulation, vital for efficient production and tube longevity, was assessed in a collaborative
gas turbine
CS-055: COMPARISON BETWEEN FLOWNEX SE AND 3-D CFD FOR SECONDARY FLOW MODELLING IN TURBOMACHINERY
This case study demonstrates the capability of using Flownex® SE as a preliminary design tool for secondary flow analysis before using detailed and computationally expensive 3-D CFD analysis. 3-D CFD
Fossil Fuel Power Generation
CS-056: Using Flownex as a Tool to Develop New Engineering Methods and Correlations for Steam Turbine Performance Prediction
This case study demonstrates the ability of Flownex to be used as a tool to develop, test and implement new correlations and methods used in the prediction of steam turbine…
hydrogen
CS-057: Integrated Systems Modeling for a CO2-Emissions Free Alkaline Water Electrolysis Cycle in Flownex SE
This case study used Flownex to model the interactions within electrolyte loops and gas systems for McPhy Energy Germany GmbH. The model assessed piping…
General Industries
CS-058: COMPARISON BETWEEN FLOWNEX SE AND EXPERIMENTAL DATA FOR A TRANSIENT WATER HAMMER EVENT
This case study demonstrates the capability of Flownex to simulate the water hammer effect by simulating the sudden closure of a valve at the outlet of a long pipe in
CS-059: Fuel Flexible Combustion System Modelling with Zero Carbon Fuely
This case study explores the use of 1D flow modeling to efficiently simulate hydrogen combustion systems, focusing on characterizing pressure drop over the burner to enhance energy savings…
CS-060: ROCKET ENGINE FEED CYCLES AND COOLING TECHNIQUES IN FLOWNEX
This case study details the investigation conducted by UKZN’s Aerospace Research Institute into the development of a Commercial Launch Vehicle (CLV) for South Africa, utilizing Flownex to model various propellant
gas turbine
CS-061: GAS TURBINE COMBUSTOR DESIGN
This case study demonstrates how Flownex was used to model three combustor types—two annular and one reverse flow—showing its effectiveness in handling complex geometries, avoiding numerical issues, and delivering rapid,
spaceflight
CS-062: Lightweight Pressure Regulator for Space Launch Vehicles
This case study focuses on the design of a regulator for a suborbital launch vehicle developed by the Aerospace Systems Research Institute, utilizing Flownex to simulate and ensure a consistent
CS-063: Modelling of Spacecraft Propulsion System Priming in Flownex
This case study shows how Flownex was used as a tool to model a fuel feed system’s priming procedure, recording dynamic pressures during a transient simulation and investigating factors like
CS-064: Design of a Mobile Liquid Rocket Engine Test Facility Fuel Feed System using Flownex
This case study highlights how Flownex was used to model the propellant feed system for the SAFFIRE rocket engine, determining tank pressure and flow characteristics, with results validated by cold
CS-065: Validating a Scaling Procedure for Cryogenic Pressure Fluctuations
This case study illustrates how Flownex was used with a scaling procedure based on dimensional analysis to simulate transient pressure fluctuations in a scaled cryogenic fluid flow system, with results
CS-066: Data Centre Free Cooling Analysis Using Flownex SE
This case study demonstrates how Flownex SE simulates free cooling in a data center using natural resources and weather data in a transient analysis to optimize…
CS-067: Design of Low Temperature Proton Exchange Membrane Fuel Cell System Components
This case study demonstrates the use of Flownex to model system components of a low-temperature proton-exchange membrane fuel cell (PEMFC), including the cathode-side air flow…
Nuclear & SMR
CS-068: Energy and Exergy in a Brayton Cycle-Based Power Conversion Unit
This case study simulated a Brayton cycle PCU in Flownex SE under steady-state conditions, logging parameters to calculate energy and exergy, and testing fault conditions by adjusting component settings for…
Fossil Fuel Power Generation
CS-069: Investigating a Delay in O2 Response in an Air/Fuel Gas System
This case study investigates a delay in airflow response during transient load changes in a fossil fuel power station, where Flownex SE identified that optimizing feedforward control and increasing the