alexa Bioengineering and Biomedical Science | OMICS International
ISSN: 2155-9538
Journal of Bioengineering & Biomedical Science

Like us on:

Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on
Medical, Pharma, Engineering, Science, Technology and Business

Bioengineering and Biomedical Science

Yuehao Luo*

Postdoctoral Research Scientist, School of Engineering and Applied Science, George Washington University, USA

*Corresponding Author:
Yuehao Luo
Postdoctoral Research Scientist
School of Engineering and Applied Science
George Washington University. USA
Tel: 001-5714396724
Email : [email protected]

Received Date: June 20, 2014; Accepted Date: June 22, 2014; Published Date: June 28, 2014

Citation: Luo y (2014) Bioengineering and Biomedical Science . J Bioeng Biomed Sci 4:e120. doi:10.4172/2155-9538.1000e120

Copyright: © 2014 Luo Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Visit for more related articles at Journal of Bioengineering & Biomedical Science


Fabrication of sharkskin surface in a large area by microrolling method

Sharkskin has been fabricated by the direct bio-replicated imprinting method in previous studies, and the good drag-reducing effect has been validated in water tunnel. However, for the fluid surface larger than the shark’s whole area, the splicing and affixing steps are absolutely necessary. One hand, the complexity of process will be increased significantly. The other hand, the phenomena of stress concentration produced by external flow will be produced on the jointing seams, especially for those which are perpendicular to the flowing direction, the jointing surface will be destroyed at a high speed of flowing, and perhaps, the drag-reducing efficiency can be decreased. Therefore, how to manufacture continuous vivid sharkskin in a large area has become an urgent problem to be resolved. For eliminating the influence of wedge angle on scale’s back, the sputtering and photo lithography processes are put into application and the continuous vivid sharkskin with good forming effect is fabricated by rolling process at last.

Numerical simulation of flow field on real sharkskin surface and exploring the drag reduction mechanism

It is well known that sharkskin surface can effectively inhibit the occurrence of turbulence and reduce the wall fiction, and in order to understand the mechanism of drag reduction, the numerical simulation is a good attempt. In this project, the 3-dimensional highlyaccurate digital model is extremely built based on the biological template, and the turbulent flow on a real shark skin is simulated thoroughly and deeply, which explain the drag reduction mechanism of shark skin comprehensively.

Experimental study of real shark skin for drag reduction effect in vacuole water tunnel

For purpose of validating the accuracy and reliability of flow field numerical simulation on a real shark skin, the actual experiments are also performed subsequently. The real shark skin surface made of silicon rubber is fabricated by bio-replicated method firstly, and then the experiments in vacuole water tunnel, the drag reducing efficiency of real shark skin surface can be obtained by testing the force produced by the skins of real shark skin and smooth surface. And the results of numerical simulation and experiments are approximately consistent with each other, which verify the accuracy and reliability simultaneously.

The drag reduction efficiency of real shark skin surface can reach more than 12%, and the attack angle of scales are the crucial factor to produce higher drag-reducing efficiency than simple straight grooves, and it can lead to the “back flowing” phenomena on the scale’s surface.

Application of bio-inspired drag-reducing technology in nature gas pipelining

In order to increase the transmission capacity of gas pipelines, the internal coating technology has been vastly put into application, and a remarkable benefit has been achieved so far. However, with the reduction of wall roughness, the small convex parts are all completely submerged in the viscous sublayer, the gas pipeline becomes “hydraulic smooth pipe”, even by smoothing the coating surface further, it is still very difficult to reduce wall friction. Therefore, in order to increase the transmission capacity on the basis of internal coating, the news methods and technologies should be researched and investigated, and perhaps, the bio-inspired drag reduction technology is a good attempt.

In the project, according to the actual transmitting circumstances of nature gas, the size and shape of bio-inspired drag-reducing surface is designed and analyzed firstly, and then the numerical simulation of flow field in nature gas pipeline is carried out deeply, and based on the characteristics and properties of the epoxy resin materials used for coating, the micro-rolling process is adopted, and the bio-inspired drag reduction pipelines are manufactured, and the field experiments with air and nature is performed finally.

The results of numerical simulation and experiments in air and nature gas are approximately consistent with each other, which verifies the feasibility of application bio-inspired drag reducing technology on nature gas transportation, and the drag reducing efficiency can reach more than 8%.

Manufacturing of different bio-inspired drag-reducing surfaces fitting to different circumstances

According to the relevant literatures and researches, the uppermost factor affecting the drag-reducing efficiency is the non-dimension groove width s+ and the non-dimension groove height h+, which has the direct relationship with velocity, kinematic viscosity and so on. Therefore, the different bio-inspired surfaces fitting to different circumstances are manufactured by Ultrasonic Elliptical Vibration Cutting method, bio-replicated method, and 3-D dimension printing technology and so on, which expands the system of advanced manufacturing.

Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Relevant Topics

Recommended Conferences

Article Usage

  • Total views: 11780
  • [From(publication date):
    October-2014 - Aug 20, 2018]
  • Breakdown by view type
  • HTML page views : 8007
  • PDF downloads : 3773

Post your comment

captcha   Reload  Can't read the image? click here to refresh

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2018-19
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

[email protected]

+1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals


porn sex

[email protected]

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

Gaziantep Escort

[email protected]

1-702-714-7001Extn: 9040

Clinical Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037


James Franklin

[email protected]

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

General Science

Andrea Jason

mp3 indir

[email protected]

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Medical Journals


Nimmi Anna

[email protected]

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T


[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001Extn: 9042

© 2008- 2018 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version