Coefficient of Hydrodynamic Torque is now available with Control Valve Performer app
Monday, April 16, 2018
Blog Author - Chaitanya Rane
Written by Chaitanya Rane
Approximately
5 Minutes Reading
Approximately
5 Minutes Reading
Here we go again ! simulationHub comes up with a new feature for the valve industry. Autonomous Valve CFD (AVC) app is now equipped with the 'Coefficient of Hydrodynamic Torque' (Cdt) curve, one of the most sought out design parameters in the valve industry. This is now available in all subscription plans without any additional cost. This all-new feature calculates the hydrodynamic torque coefficient and predicts the nature of the Cdt curve for all types of control valves with rotary motion viz., butterfly valves, ball valves, plug valves etc.
Rotork Valve Actuators
Image Source: Rotork Actuators, Ukrainian energy company

Why is coefficient of hydrodynamic torque is essential for control valve designers?

Hydrodynamic torque is a significant design parameter for engineers dealing with control valve design. It has a direct effect on the design of the valve disk, valve stem diameter and the actuators used to regulate the valve position. The coefficient of hydrodynamic torque comprises the effect of both the pressure drop and diameter scale along with the torque value.
Control Valve Hydrodynamic Torque equation
This gives the designer data which can be used to determine the external torque required to hold the valve at a given position. Also, this data helps ensure safe design, as excess torque value over the design limit might result in the rupture of the disk and the valve body causing a hazardous accident. Hence predicting the hydrodynamic torque for all opening conditions in rotary valves is of utmost importance.

Coefficient of hydrodynamic torque curve and performance data

You can analyze the Cdt values for all opening angles using the "Performance Data Table" on the Left-Navigation-Panel under the Performance Data section of the Results Stage. AVC also provides the user with a Cdt curve which can be viewed by clicking the ‘View & Export’ button.
The coefficient of hydrodynamic torque curve is essential to understand the nature of change in the coefficient of hydrodynamic torque for various valve positions. The Cdt curve can also be exported as a high-resolution PNG image or a CSV data file for external use.

Coefficient of hydrodynamic torque curve in auto-generated technical report (PDF)

Autonomous Valve CFD delivers an auto-generated technical report with all the essential technical details regarding the simulation. The report consists of definitions, formulae and theoretical data regarding the coefficient of hydrodynamic torque along with the Cdt curve and performance data table.
This technical report is a beneficial tool for the user for documentation and presentation of the simulation data.

About Autonomous Valve CFD app

CFD has many advantages in valve performance analysis including accuracy, cost and depth of flow information it provides. The major limitations of adopting CFD in the valve design process are, required CFD expertise, the complexity of valve geometry, compute power and time required for analysis. All valve manufacturers have an in-house team of experts understanding the valve design. But, when it comes to CFD analysis, many of them rely on either in-house CFD experts or third-party consultants. This is the major limitation for adopting CFD in the day-to-day design activity.
Autonomous Valve CFD(AVC) app removes all the limitations and brings the power of CFD simulation in the hands of valve designers and manufactures. The app workflow is crafted considering a designer as a focal point. The fully customized workflow takes the known inputs from designer and generates a ready-to-use valve performance report. 3D CFD results generated by app helps designers to understand the fluid flow behavior inside the valve and design the valve with better performance. With the fleet of cloud computing clusters, the results are generated within minutes and help designer to evaluate different design variations and operating scenarios.
Autonomous Valve CFD comes with the variety of subscription models to suit requirements of low-to-heavy design load and financial budget. The app is designed for all types of devices including phone, tablet, and personal desktop and can be accessed anytime. Know more details about the app.
You can take the FREE trial of Autonomous Valve CFD app. The FREE trial does not need any credit card information and valid for 15 days. With 20 simulation credits in FREE trial, you can evaluate a full performance curve for at-least two valve designs. Take a trial and get the performance curves evaluated for you own valve design.
Blog Author - Chaitanya Rane
Chaitanya Rane
Chaitanya is a CFD Support Engineer at simulationHub. He is interested in the fields of physics and mathematics and enjoys exploring the domains like CFD, FEA and industrial applications of engineering simulations. He has worked on simulationHub's CFD simulation apps like Autonomous Valve CFD, Pedestrian Comfort Analysis and Autonomous HVAC CFD. Chaitanya is also a blogging enthusiast and contributes to the technical content writing at simulationHub. He holds a Bachelor's degree in Mechanical Engineering from the University of Pune.
Blog Author - Chaitanya Rane
Chaitanya Rane
Chaitanya is a CFD Support Engineer at simulationHub. He is interested in the fields of physics and mathematics and enjoys exploring the domains like CFD, FEA and industrial applications of engineering simulations. He has worked on simulationHub's CFD simulation apps like Autonomous Valve CFD, Pedestrian Comfort Analysis and Autonomous HVAC CFD. Chaitanya is also a blogging enthusiast and contributes to the technical content writing at simulationHub. He holds a Bachelor's degree in Mechanical Engineering from the University of Pune.
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