International Journal of Energy and Power Engineering

Special Issue

Xu’s Sealing and Flowing Theories of Fluids

  • Submission Deadline: Jun. 30, 2016
  • Status: Submission Closed
  • Lead Guest Editor: Changxiang Xu
About This Special Issue

The Issue will introduce:

- Xu's sealing law and theorem of fluids,
- new physical quantities: fluid current (fluid leakage current), fluid leak resistance (tightness), fluid resistance, fluid reactance, fluid impedance and pressure's sustainability,
- new concepts: self-sealing mechanism for material, self-sealing mechanism for O-rings, flowing & leaking mechanisms of fluids, and sealing difficulty factor of seals,
- new seal-designing methods and leakage-measuring methods/devices,
- new explanations of common applications and demonstrations of changes in fluid pressure with velocity that exist in the textbooks and on websites.

As far as flow is concerned, electricity is a fluid. Electrical flow in various electrical circuits at a fixed voltage is determined by their electric (leak) resistance and reactance. Of course, fluid flow in various fluid circuits such as in pipes, on objects and in joints at a fixed pressure is determined by their fluid (leak) resistance and reactance. Both the prior hydromechanics and the prior relevant international standards of seals were developed on the basis of not knowing such concepts and theories, and must be problems.

Lead Guest Editor
  • Changxiang Xu

    Baoyi Group Co. Ltd, Deyang, China

Guest Editors
  • Xiaozhong Zhang

    Technical Director, Baoyi Group Ltd, Wenzhou, China

  • Youjun Chen

    Chief-Engineer, Baoyi Group Ltd, Wenzhou, China

Published Articles
  • It Is Necessary to Abrogate All the International Basic Standards of Seals

    Xu Changxiang , Zhang Xiaozhong , Chen Youjun

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 1-12
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.11
    Downloads:
    Views:
    Abstract: According to definitions in the international standard JCGM 200, physical quantities, divided into base quantity and derived quantity, are a property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference (a measurement unit); a base quantity cannot be expressed in terms of the othe... Show More
  • New Explanations of Common Applications and Demonstrations of Changes in Pressure with Velocity of a Fluid Current

    Xu Changxiang , Zhang Xiaozhong , Chen Youjun

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 13-21
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.12
    Downloads:
    Views:
    Abstract: Movements are relative. The rapid flowing of a fluid through a wall-bulged passage of pipes at a certain pressure can be regarded as a movement of the bulged wall relative to a static fluid in a certainly pressurized pipe. The axial movement of a cylindrical object in the atmosphere and the water whose free inherent pressure is not influenced can b... Show More
  • Pressure Energy, Resistance and Reactance in Fluid Leak & Flow

    Xu Changxiang , Zhang Xiaozhong , Chen Youjun

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 22-30
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.13
    Downloads:
    Views:
    Abstract: The fluid current in a fluid circuit, corresponding to the electrical current in an electrical circuit, is determined by a fluid pressure corresponding to electrical pressure (voltage), and a fluid impedance corresponding to electrical impedance, and directly proportional to the fluid pressure and inversely proportional to the fluid impedance betwe... Show More
  • Definition, Quantifying and Gauging of Tightness

    Xu Changxiang

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 31-34
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.14
    Downloads:
    Views:
    Abstract: A leakage for fluid in a pressure vessel to flow through its sealing joint to the atmosphere is just like a leakage for electric charges in a capacitor to flow through its insulator to the ground, and hence there is a sealing law for pressure vessels that is completely similar to Ohm's law, stating the leakage current IL flowing through a sealing j... Show More
  • Xu's Designs and Parameters for Sealing Elements

    Xu Changxiang

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 35-42
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.15
    Downloads:
    Views:
    Abstract: Any leak-free achievement needs a sealing surface that has microcosmic irregularities fully complementary to a surface to be sealed and that can be qualified only by compressive working or installing in position. ASME Code mistakes the working stress needed to result in a qualified gasket in installation for the stress needed to enable a qualified ... Show More
  • Xu's Sealing Theory and Rectangular & O-Shaped Ring Seals

    Xu Changxiang

    Issue: Volume 5, Issue 4-1, July 2016
    Pages: 43-58
    Received: Jun. 22, 2016
    Accepted: Jun. 25, 2016
    Published: Aug. 24, 2016
    DOI: 10.11648/j.ijepe.s.2016050401.16
    Downloads:
    Views:
    Abstract: The difficulty for a sealing element to create and maintain a leak-free joint is determined by its sealing difficulty factor m1, m1 = elastic modulus Ec of its sealing contact layer/elastic modulus Es of its sealing contact layer substrate. Therefore, theoretically the contact layer of a sealing element shall be soft & inelastic and assembled up to... Show More