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Free-Surface Flow Simulation

Analyze Liquid Surface Behaviour Before Physical Testing

Free-surface flow occurs when a liquid interacts with another fluid, typically air, creating a moving interface between the two phases. Such flows are commonly encountered in tanks, reservoirs, spillways, open channels, marine systems, filling processes, and industrial fluid-handling equipment. Free-Surface Flow Simulation enables engineers to evaluate liquid-surface behaviour before physical testing, helping improve system performance, safety, and operational reliability.

At Experiqs, we perform Free-Surface Flow Simulations to analyze liquid-air interfaces, wave formation, sloshing behaviour, filling and draining processes, surface deformation, and fluid motion under realistic operating conditions. Our simulations help organizations optimize designs, improve operational efficiency, and validate fluid-system performance before implementation.

Cinematic CFD Spillway Flow Visualization
Industrial CFD Tank Flow Visualization

Why Free-Surface Flow Simulation Matters

The presence of a moving liquid surface introduces complex flow behaviour that can significantly affect system performance and stability. Surface waves, splashing, fluid oscillations, air entrainment, and liquid-level variations can influence structural loads, process efficiency, and operational safety.

Free-Surface Flow Simulation enables engineers to visualize and quantify these phenomena under realistic operating conditions. By understanding how the liquid surface evolves during operation, engineering teams can optimize designs, reduce risk, and improve system reliability while minimizing costly experimental testing.

Our Capabilities

Our free-surface flow simulation capabilities support the evaluation and optimization of liquid-interface behaviour across a wide range of engineering applications.

Simulation capabilities include:

Liquid-Air Interface Analysis

Wave Formation Assessment

Filling & Draining Process Evaluation

Surface Deformation Analysis

Fluid-Level Variation Studies

Splashing & Air Entrainment Assessment

Flow Stability Evaluation

Design Optimization & Validation

Applications

Free-Surface Flow Simulations are widely applied across water treatment facilities, storage tanks, reservoirs, open-channel systems, marine equipment, hydraulic structures, process industries, energy infrastructure, spillways, and industrial fluid-handling systems where liquid-surface behaviour directly influences performance and safety.

Deliverables

Depending on project requirements, clients may receive:

  • Simulation report
  • Liquid-surface visualization
  • Wave and interface analysis
  • Fluid-level variation assessment
  • Flow performance evaluation
  • Design optimization recommendations
  • Engineering validation results
  • Operational improvement studies

Talk to Our Engineering Team

Whether you’re evaluating tank filling operations, analyzing wave formation, optimizing hydraulic structures, or validating free-surface flow behaviour before implementation, our engineers can help identify the appropriate free-surface flow simulation approach for your application.

CFD Wave Flume Flow Visualization

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Let’s Start an R&D Discussion

Whether you’re exploring a new R&D initiative, seeking advanced simulations, planning experimental validation, or evaluating product feasibility—our experts are ready to assist you.

Let’s Start an R&D Discussion

Whether you’re exploring a new R&D initiative, seeking advanced simulations, planning experimental validation, or evaluating product feasibility—our experts are ready to assist you.