Reacting Flows

Steam Methane Reformer for Syngas

Adding heat and steam to methane (CH4) results in syngas: a mixture of carbon monoxide (CO) and hydrogen (H2). This process can be used to create hydrogen for use in fuel cells. Alternatively, the syngas can be used as feedstock for the production of liquid fuels using the Fischer-Tropsch or Mobil processes. These pathways are important for development of biofuels (ethanol and bio-diesel from biomass) and other fuels and fuel oils as part of coal-to-liquid (CTL) and natural gas to liquid (GTL) refining.

SINDA/FLUINT (via Thermal Desktop® with FloCAD®) offers important functionality for the design and simulation of such systems, including:

  • Equilibrium reactions, finite-rate kinetics (“reacting flows”), or both within one system
  • Detailed analysis of heat transfer and heat exchange equipment for concurrent design of realistic reformer geometries
  • Inclusion of the entire process (e.g., steam generation)
  • Ability to resolve fast time scales for stability investigations and evaluations of control strategies
  • Orders of magnitude faster solutions than CFD, enabling sizing and sensitivity studies

A set of thermohydraulic models is available that focus on a plug-flow reactor (PFR) arrangement for a simplified methane steam reformer. The models are available in FloCAD format, and include:

  • Validation against other tools and methods
  • Demonstration of finite-rate kinetics (reacting flows) using Arrhenius-type coefficients
  • Demonstration of equilibrium chemistry co-solved with thermal/fluid equations
  • Demonstration of steady-state and fast transient solutions (e.g., control time scales)
  • Use of chemical equilibrium software for generation of fluid properties, including “equilibrium fluids”
  • Discussion of methods for including coke (carbon) formation

Click here to fetch the Methane Reforming Example from our User Forum

See also: Flow Battery Electrochemical Example

flow regimes

Introduction to Two-phase Flow

September 24, 2-3pm MDT

This webinar introduces basic concepts in two-phase flow modeling including quality, void fraction, flow regimes, slip flow, pressure drops and accelerations, and heat transfer.

No knowledge of CRTech software is required. However, references to the corresponding FloCAD features will be made to assist users of that product.

Click here to register

Introductory FloCAD Training

Class times: September 5, 10, and 12, 2019, 9:00 am to 12:00 pm MDT daily
Cost: no charge (attendees must have an active support contract)

CRTech will be hosting introductory training for FloCAD (Flow Modeling in Thermal Desktop). This is our standard FloCAD class previously hosted in a classroom environment and now restructured for an online teaching environment.

The class will introduce single-phase fluid modeling concepts and how to build fluid models within the FloCAD work environment. Topics covered include an introduction to fluid modeling components, geometric versus non-geometric modeling options, working with FloCAD Pipes, solution control, and an introduction to path and pipe libraries.

The class will be broken into three two- to three-hour sessions held over a 3 day period. The format will be online lecture and demonstration with opportunities to ask questions. Hands-on lab work will be provided to students to work on after each session. To gain the most from this class, students are encouraged to attend all three sessions.

Prerequisites: Attendees must have basic working knowledge of Thermal Desktop as many of its base features will not be covered in this class but their usage is required for FloCAD.

Eligibility Requirement: This class is a service to our customers. All attendees must have an active support contract. If you are unsure of your support status, please contact CRTech.

Click here to register