OCTOBER 9, 2026
Issue #58
BREAKING
Flow assurance forum: wax deposition models benchmarked against 12 field production datasetsPSV sizing standard EN ISO 4126 part 9 — new annex on two-phase discharge capacity publishedUKOOOA releases updated guidance on subsea wellhead pressure testing documentationIMechE fluid mechanics group: annual Osborne Reynolds lecture series registration openSPE paper 218340: continuous sand-monitoring field results from a Gulf of Mexico producerHydraulic Institute updates pump efficiency test standard ANSI/HI 14.6-2024Shell Global Solutions opens applications for 2026 flow assurance engineering fellowshipAnsys Fluent 2025R2: improved VOF-to-DPM transition modelling for separator inlet devicesFlow assurance forum: wax deposition models benchmarked against 12 field production datasetsPSV sizing standard EN ISO 4126 part 9 — new annex on two-phase discharge capacity publishedUKOOOA releases updated guidance on subsea wellhead pressure testing documentationIMechE fluid mechanics group: annual Osborne Reynolds lecture series registration openSPE paper 218340: continuous sand-monitoring field results from a Gulf of Mexico producerHydraulic Institute updates pump efficiency test standard ANSI/HI 14.6-2024Shell Global Solutions opens applications for 2026 flow assurance engineering fellowshipAnsys Fluent 2025R2: improved VOF-to-DPM transition modelling for separator inlet devices
PIPELINE ENGINEERING

Density-stratified flow in large-diameter trunk lines: CFD validation study

Two-phase stratified flow at low velocities in a 48-inch crude trunk line. VOF simulations benchmarked against gamma densitometer traverses — where they agree, and critically, where they diverge.

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Flow Measurement & Instrumentation

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PROCESS HYDRAULICS

Pump curve correction for viscous process fluids

HI correction method vs ISO 17769: which is more conservative and by how much.

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INSTRUMENTATION

Differential pressure cell zero drift in hot service

Root cause analysis of 0.3% systematic bias found during a feed preheat train audit.

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PIPELINE ENGINEERING

Cathodic protection interference in bundled flowlines

Stray current modelling and the blind spot in standard CP design practice.

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CFD & Numerical Simulation

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ROTATING EQUIPMENT

Impeller trim as a variable-speed drive alternative

When trimming the impeller is more cost-effective than installing a VFD.

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HYDRAULIC SYSTEMS

Surge relief valve sizing for fast-closing actuators

Closure time sensitivity and the 10% rule that does not hold at high system pressures.

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STRUCTURAL INTEGRITY

Fatigue loading spectra for subsea spool pieces

How wave-induced slug flow loads compare to thermal expansion cycle magnitudes.

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"The check valve slam was visible in the field data. It was absent from the report."

— Dr. Sofia Lund, FluidsMech Engineering

Pipeline Engineering

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FLOW MEASUREMENT

Wet vs dry calibration for ultrasonic transit-time meters

Propagation of calibration uncertainty into fiscal allocation measurements.

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CFD ANALYSIS

Adaptive mesh refinement for free-surface problems

Efficiency gains and the pitfall of under-resolved interface curvature in VOF.

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PROCESS HYDRAULICS

Net positive suction head: the margin that matters

NPSHA calculation errors most frequently identified in plant audit reviews.

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Hydraulic Systems & Structural Integrity

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INSTRUMENTATION

Thermowell wake frequency: when ASME PTC 19.3 is insufficient

Dynamic analysis of thermowells in pulsating flow — beyond steady-state vortex shedding.

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PIPELINE ENGINEERING

Subsea pipeline walking: prediction and mitigation strategies

Thermal-transient-driven axial walking in HP/HT flowlines vs analytical model predictions.

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ROTATING EQUIPMENT

Mechanical seal flush plan selection for difficult process fluids

API Plan 53B vs 53C — decision criteria extending beyond the standard's guidance scope.

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CFD Analysis & Simulation

Turbulent flows, heat transfer, multiphase systems, and aerodynamic profiling using validated commercial and open-source solvers.

Pipeline Engineering

Flow assurance, stress analysis, corrosion modelling, and integrity management for onshore and offshore pipeline networks.

Process Optimisation

Efficiency audits, pressure drop minimisation, pump scheduling, and energy recovery for industrial process plants.

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FluidsMech Engineering was founded by a team of hydraulic and mechanical engineers with roots in industrial R&D. Over fifteen years we have grown into a trusted partner for process plants, infrastructure operators, and research facilities across Europe, the Middle East, and Asia.

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