ABECATOR CFD BLOG & TECHNICAL LIBRARY
One roof for practical CFD knowledge.
Technical notes, solver workflows, engineering explanations and problem-solving cases—organized so each subject can be recognized visually, understood quickly and explored in technical depth.
BLOG CATEGORIESSeven CFD topic hubs connect guides, cases, tools and training.
These server-rendered topic clusters organize the library around modelling decisions and failure modes so the same engineering context remains connected across Abecator.
Meshing & wall treatment
Use this topic hub when the engineering answer depends on near-wall resolution, prism-layer design, local mesh quality or whether the mesh is compatible with the turbulence and wall-treatment strategy.
Explore topic →CFD TOPIC HUBVerification & validation
Use this hub when you need evidence that a CFD result is numerically resolved, physically defensible and suitable for an engineering decision, report, thesis or journal paper.
Explore topic →CFD TOPIC HUBThermal & CHT
Use this hub for conjugate heat transfer, cooling, temperature prediction, thermal interfaces and energy-balance problems where conduction and convection must be interpreted together.
Explore topic →CFD TOPIC HUBMultiphase & VOF
Use this hub for free-surface and VOF simulations where interface transport, initialization, mesh resolution, timestep and boundary behavior determine whether the solution is physical.
Explore topic →CFD TOPIC HUBTurbomachinery
Use this hub for gas-turbine, compressor, fan, pump and other rotating-flow CFD where frame definitions, rotor-stator coupling, wall resolution and transient timescales control the result.
Explore topic →CFD TOPIC HUBConvergence & troubleshooting
Use this hub when a solver diverges, residuals stall, results look suspicious, conservation is poor or the solution depends strongly on numerics, boundaries or initialization.
Explore topic →CFD TOPIC HUBInternal flow & pressure drop
Use this hub for ducts, pipes, manifolds and flow networks where pressure loss, flow split, turbulence, wall friction, local losses and boundary placement determine the engineering result.
Explore topic →24 guides for CFD research and journal publication.
Topic development, numerical credibility, validation, scientific writing, solver-specific research, journal selection, peer review and submission—all connected under one roof.
Open the Complete Research Library
Follow the full journey from research idea and CFD methodology through verification, validation, manuscript development, reviewer responses and final submission.
Open library →COMPLETE SERVICEZERO TO PUBLICATIONNeed Abecator to perform the work?
Choose full execution, collaboration or focused support for research design, CFD cases, analysis, manuscript, submission and revisions.
Explore complete support →From a CFD research idea to a published journal paper.
A complete roadmap for students and researchers covering topic development, simulation planning, verification, validation, data analysis, scientific writing, submission and peer-review revisions.
How to Develop and Publish a CFD Research Paper
Follow the full journey from the first idea through model setup, case execution, scientific evidence, manuscript preparation, journal submission, reviewer responses and final publication.
Read the complete guide → NEW TOPIC GUIDEMSC / PHD RESEARCH IDEASCFD Research Topics & Project Ideas
Explore 18 practical topic directions across heat transfer, renewable energy, HVAC, turbomachinery, internal flow, aerodynamics, multiphase flow and AI-assisted CFD.
Explore research topics → NEW VERIFICATION GUIDEMESH INDEPENDENCE / GCIMesh-Independence Study for a Journal Paper
Build and report a three-mesh study using systematic refinement, quantities of interest, observed order, Richardson extrapolation, GCI and honest treatment of non-monotonic results.
Read mesh-study guide → NEW CREDIBILITY GUIDEVERIFICATION VS VALIDATIONWhat CFD Journal Reviewers Expect
Separate convergence, code verification, solution verification and physical validation; quantify uncertainty; and match every research claim to the evidence available.
Read credibility guide → COMPLETE SERVICEZERO-TO-PUBLICATION SUPPORTNeed Abecator to help complete the journey?
Choose full execution, close collaboration or focused support—from shaping the topic and running CFD cases to manuscript, submission and reviewer revisions.
Explore publication support →Understand the quantities that drive modelling decisions.
The foundation cluster connects directly to live CFD calculators so the equation, assumption and practical use stay together.
What is y+ in CFD?
Understand viscous, buffer and log-layer regions, choose a target y+, estimate first-cell distance and verify the solved wall-y+ field.
Read guide → PUBLISHEDFLOW PHYSICSReynolds Number in CFD
Physical meaning, characteristic-length selection, internal versus external interpretation, similarity and common mistakes.
Read guide → PUBLISHEDTRANSIENT / NUMERICSCourant Number, CFL & Time Step
Understand local transport per timestep, explicit versus implicit stability, temporal accuracy and signal-speed effects.
Read guide → PUBLISHEDMESHING / PRISM LAYERSPrism Layers in CFD
Connect first-layer thickness, layer count, growth rate, total thickness, boundary-layer coverage and core-mesh transition.
Read guide →Search by symptom, then follow the diagnostic sequence.
The Technical Cases cluster now covers convergence, mesh quality, wall treatment, conservation, thermal, multiphase, transient, rotating-flow and validation problems.
Browse All CFD Technical Cases
A dedicated problem-to-diagnosis-to-fix library for engineers working with an existing CFD model.
Open Technical Cases → NEWMESH QUALITYBad Mesh Quality in CFD
Find where poor cells actually matter by correlating mesh defects with gradients, fluxes and the engineering quantity of interest.
Open case → NEWPRISM LAYERSPrism Layers Collapse or Disappear
Diagnose local gap, curvature, sharp-corner, total-thickness and surface-resolution conflicts.
Open case → NEWCONSERVATIONMass Imbalance in CFD
Build the complete control-volume balance and distinguish incomplete convergence from physical storage or missing flux paths.
Open case → NEWFALSE CONVERGENCECFD Converged but Results Look Wrong
Low residuals do not prove that the mesh, boundary conditions, physics or engineering result are credible.
Open case → NEWTURBULENCE / WALLSTurbulence & Wall-Treatment Mismatch
Align wall treatment, y+, first-cell height, prism resolution and RANS assumptions with the quantity of interest.
Open case → NEWTRANSIENT CFDCFD Time-Step Sensitivity
Connect Δt to Courant number, dominant frequency, moving geometry and timestep-independent engineering signals.
Open case → NEWROTATING FLOWMRF & Sliding-Mesh Interface Problems
Check frame definitions, interface compatibility, periodicity, angular resolution and conservation across rotor-stator regions.
Open case → NEWVALIDATIONCFD Results Do Not Match Experiment
Separate comparison error, experimental uncertainty, numerical uncertainty, uncertain inputs and model-form error.
Open case →16 original solver-specific engineering guides.
The STAR-CCM+ library now spans geometry, meshing, wall treatment, boundaries, convergence, connectivity, rotating flow, CHT, 2D/axisymmetric modelling and reusable post-processing.
STAR-CCM+ Technical Library
Browse the complete Abecator solver-specific library and move from software workflow into quantitative checks, troubleshooting, training and engineering support.
Open library → PUBLISHEDPRE-PROCESSINGSurface Repair
Diagnose and repair leaks, free edges, intersections and topology defects before volume meshing.
Read guide → NEWTURBULENCEWall Treatment & y+
Connect first-cell height, prism layers, turbulence assumptions and solved wall-y+ evidence.
Read guide → NEWCONVERGENCEResiduals & Convergence Monitoring
Combine residuals with engineering monitors, conservation and a defensible stopping rule.
Read guide → NEWROTATING FLOWMRF vs Sliding Mesh
Choose steady rotating-frame or transient sliding-mesh physics from the output you need to resolve.
Read guide → NEWTHERMAL / CHTConjugate Heat Transfer
Build fluid-solid heat paths, material models, interfaces and energy-balance evidence.
Read guide →The library grows around engineering decisions.
Each cluster connects theory, diagnostic workflows, calculators and engineering support rather than treating CFD as a collection of disconnected software settings.
Meshing & Wall Treatment
Surface repair, y+, first-cell height, prism layers, mesh quality, growth, near-wall consistency and mesh independence.
Turbulence & Flow Physics
RANS model selection, near-wall treatment, Reynolds effects, transition, separation and modelling assumptions.
Heat Transfer & Thermal CFD
CHT, thermal boundaries, wall heat flux, cooling, energy balances and temperature troubleshooting.
Multiphase & Transient CFD
VOF, free surfaces, timestep sensitivity, Courant number, interface resolution and transient diagnostics.
STAR-CCM+ Workflows
16 original solver-specific guides covering geometry, meshing, boundaries, convergence, CHT, rotating flow and post-processing.
OpenFOAM Workflows
Case setup, boundary conditions, turbulence, meshing, function objects and diagnostics.
Turbomachinery & Rotating Flow
Rotating frames, interfaces, gas turbines, cooling flow, blade passages and transient rotor-stator interaction.
Simulation Troubleshooting & Validation
Divergence, conservation, mesh problems, false convergence, validation disagreement and independent model review.
Use the public diagnosis first. Escalate only when the answer depends on the actual model.
Technical Cases are designed to solve as much as possible independently while creating a clear path to Abecator CFD support when deeper model-specific judgement is required.