Internal Combustion (IC) Engine

Automotive Engine Design

It is an exciting time to be an automotive powertrain engineer, with many of the fundamental decisions that were made 50 or even 100 years being revisited, and many new options being explored thanks to the advent of new materials and advanced sensors and controls.

Fortunately, the ability to analytically evaluate candidate technologies and to fine-tune designs is keeping up with the need to explore new ideas.

A demonstration model is available to serve as a starting point for your explorations. While it is based on a four-stroke Otto cycle gasoline engine with 6 inline cylinders, the methods can be repurposed or extended to other cycles and configurations.

This FloCAD®-based model is built to explore short time scale events such as pressure waves within intake and exhaust runners, such that volumetric efficiencies and engine performance can be estimated. To do so, it models the transient actions of each of six cylinders independently through each stroke. Nonetheless, run times are fast enough (on the order of minutes) that parametric variations can be quickly explored. The focus of the problem is on the very short time‐scale events including pressure waves in the intake and exhaust runners. Details of flows, combustion, and heat transfer within the cylinder itself have been greatly simplified to preserve the focus on the air supply and exhaust systems.

Click here to download this sample from our support forum

This model was developed as a by‐product of an investigation of fast‐transient interactions within a turbocharged automotive engine.

Postprocessed Sinaps® Diagram showing temperatures and flows

Postprocessed FloCAD® diagram (sketch-pad mode) showing temperatures and flows

Pressure/flow profile for 720 degrees of crank rotation

Pressure/flow profile for 720 degrees of crank rotation (6000rpm, Cylinder #1)

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