News & Insights from Dynaflow Research Group

Engineering Training

DRG training courses 2026

Our 2025 classroom training course schedule for CAESAR II Statics, CAESAR II Dynamic and PV-Elite is online! We also offer a wide range of online training courses in fiberglass engineering, fluid flow, piping and pressure vessel design.

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Dynamic stress response of the Ærfugl MEG Injection Skid

Dynamic stress response of the Ærfugl MEG Injection Skid

The Ærfugl MEG (Monoethylene Glycol) injection skid, engineered by Hitec Products AS for deployment on the Skarv FPSO, is a critical system designed to inject MEG into subsea flowlines, thereby preventing hydrate formation. Following the comprehensive pulsation analysis, which established compliance with API 674 DA2 pulsation criteria through targeted mitigation

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Pulsation Analysis of the Ærfugl MEG Injection Skid

Pulsation Analysis of the Ærfugl MEG Injection Skid

Following the successful verification of the static mechanical integrity of the Ærfugl MEG injection skid in Phase 1, Hitec Products AS commissioned Dynaflow Research Group to undertake a detailed pulsation analysis in accordance with API 674 DA2. The aim was to address the risks posed by pressure pulsations generated by

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Ærfugl MEG injection skid consisting of a suction (blue), discharge (green) and pressure safety line (red), for transport load cases

Static Pipe Stress Analysis for Ærfugl MEG Injection Skid

The Ærfugl MEG (Monoethylene Glycol) injection skid, designed and produced by Hitec Products AS for installation on the FPSO (Floating Production Storage and Offloading) vessel in the Skarv field, is a mission-critical component in the field’s flow assurance strategy. To ensure mechanical integrity and operational reliability, a comprehensive static pipe

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ANSYS flange model
FEA

Analysis of Large Dissimilar Bolted Flanges

For a coil-wound liquified natural gas (LNG) heat exchanger, an existing 66” and new 72” bolted flange joint have been analysed and reviewed for mechanical loading and multiple thermal load cases in accordance to the 2013 edition of ASME VIII Div.1 and Div.2  by Dynaflow Research Group (DRG) using ANSYS

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modelling aspects
Fiberglass Engineering

Pipe Stress Analysis for a Firewater GRE system

An existing fiberglass firewater piping system was expanded to enhance its capacity, necessitating validation for the newly added components. The client, engaged in the RDCG Rotterdam capacity growth project, specializes in producing renewable fuels through the chemical conversion of vegetable and animal oils. The firewater system at this facility is

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Stable vortex with higher flow velocities
BOSfluids

Mixing Flow, Surge and Pipe Stress Analysis

Our client was looking to repurpose a liquid transport and storage system for a different fuel. The new fuel blend has a larger viscosity and density. Heat tracing is applied to the pipe line to reduce the liquid viscosity during transport. The new fuel is pumped into a storage tank,

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CFD

Multiphase CFD Study of Separation Tank

Our client reported multiple cracks at weld locations on a separation tank. These cracks are suspected to be caused by dynamic flow effects from the mixed inflow of acid gas and liquid. To address this issue, the client requested a Computational Fluid Dynamics (CFD) analysis to quantify the forces exerted

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cfd, computational fluid dynamics
CFD

Multiphase Flow & Vibration Analysis of PSV Discharge

A client approached Dynaflow with concerns about potential dynamic loads on their piping system during the activation of a Pressure Safety Valve (PSV) protecting a degasser. During PSV opening, both gas and liquid (methane and water) are discharged together, creating complex flow conditions that could lead to transient forces and

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compressor analysis. pulsation analysis, vibration analysis
Fluid Flow

Pulsation and Vibration Analysis of Compressor System

A client operates a reciprocating compressor at their terminal facilities, which is integral to their gas processing operations. During routine operations, excessive vibrations were observed within the system, raising concerns regarding equipment reliability, safety, and compliance with relevant industry standards. The compressor system in question features a 6-cylinder design with

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oil and gas, pulsation and vibration, compressor
BOSpulse

API 618 DA3 Pulsation and Vibration Study for Compressor

The Tesoro Salt Lake City Refinery initiated a project to reduce the sulfur content in its products, necessitating modifications to the piping system on the discharge side of compressors K-701A/B. These changes prompted concerns about excessive pulsations and vibration-induced stresses, particularly as no previous pulsation study had been conducted. The

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heat exchanger, cfd, computational fluid dynamics
CFD

Flow-Induced Vibration Analysis in Heat Exchanger Tube Bundles

Heat exchangers are essential in industrial applications for transferring heat between fluids. However, they are susceptible to multiple mechanical failures, being one of them flow-induced vibrations (FIV). This case study examines a specific incident where a heat exchanger experienced multiple failures at the welded connections of tube bundles to the

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catalyst withdrawal
CFD

CFD and FEA Analysis of a High-Temperature Tee in Chemical Processing

In the chemical processing industry, equipment integrity under extreme conditions is paramount for safety and efficiency. This case study examines the thermal and mechanical analysis of a 2” equal tee subjected to high-temperature fluidized catalyst streams. The project’s objective was to assess the tee’s integrity where a 690°C catalyst stream

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fiberglass, frp, fiberglass engineering, cooling water network
Asset Integrity

Asset Integrity Review of Fiberglass Piping in Cooling Water Network

A petrochemical facility has been experiencing recurring failures in its fiberglass piping Cooling Water (CW) network. With seven failures reported up to 2014 and a recent failure in November 2023, the integrity of the system has come under scrutiny. As the fiberglass piping approaches its 20-year design lifetime, a comprehensive

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fiberglass, gas pipeline, surge analysis, steady-state analysis, transient analysis, fiberglass gas pipeline
Fiberglass Engineering

Surge Analysis of a Fiberglass Gas Pipeline

A fiberglass gas pipeline is being implemented to supply gas from a compressor station to a delivery point. As the pipeline approaches completion, ensuring its operational safety and integrity is paramount. This case study examines the surge analysis conducted on the buried portion of the pipeline to identify potential vulnerabilities

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ammonia plant, colling water system, fiberglass, frp, design review
Ammonia Plant

Design Review of Cooling Water Systems for Ammonia Plant

An ammonia plant in Australia has experienced recurring failures in its cooling water systems since its commissioning in the mid-2000s. The plant utilizes two primary cooling systems: a Sea Cooling Water (SCW) system and a Fresh Cooling Water (FCW) system. The SCW system, with a high capacity, consists of multiple

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fatigue analysis, industrial pressure vessel
Fatigue Assessment

Fatigue Analysis of Industrial Pressure Vessel

This case study examines the structural integrity of an industrial pressure vessel subjected to cyclic thermal and pressure loading. In processes where such vessels experience significant temperature and pressure fluctuations, ensuring the longevity and safety of these critical components is paramount. The primary objective of this study is to assess

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Finite Element Analysis, FEA, Thermal Fatigue, Heat Exchanger, Header Boxes
Fatigue Assessment

Thermal Stress Analysis of Air Cooler Heat Exchanger Header Box

This case study examines the structural integrity of header boxes in an industrial air cooler heat exchanger subjected to cyclic thermal loading and static pressure. In processes where heat exchangers experience significant temperature fluctuations, ensuring the longevity and safety of critical components is paramount. The primary objective of this study

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