Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

A STUDY ON FLOW IN A SLIT NOZZLE FOR DISPENSING A LOW-VISCOSITY SOLUTION OF SINGLE-WALLED CARBON NANOTUBES

저점성 SWNT 분산액 도포용 슬릿 노즐 설계를 위한 유동해석

  • 손병철 (금오공과대학교 대학원 기계공학과, STX 엔파코) ;
  • 곽호상 (금오공과대학교 기계공학부) ;
  • 이상현 ((주)탐엔지니어링, 기술연구소)
  • Published : 2009.03.31
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Abstract

A combined theoretical and numerical study is conducted to design a slit nozzle for large-area liquid coating. The objectives are to guarantee the uniformity in the injected flow and to provide the capability of explicit control of flow rate. The woking fluid is a dilute aqueous solution containing single-walled carbon nanotubes and its low viscosity and the presence of dispersed materials pose technical hurdles. A theoretical analysis leads to a guideline for the geometric design of a slit nozzle. The CFD-based numerical experiment is employed as a verification tool. A new flow passage unit, connected to the nozzle chamber, is proposed to permit the control of flow rate by using the commodity pressurizer. The numerical results confirm the feasibility of this idea. The optimal geometry of internal structure of the nozzle has been searched for numerically and the related issues are discussed.

Keywords

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