ML20198H442

Non-proprietary HI-87112, Fluid Flow in Narrow Channels Surrounding Moving Rigid Bodies

ML20198H442
Person / Time
Site:	Waterford
Issue date:	04/07/1987
From:	Paul B HOLTEC INTERNATIONAL
To:
Shared Package
ML20198H363	List: ML20198H357 ML20198H371 ML20198H391 ML20198H406 ML20198H412 ML20198H437 ML20198H442 ML20198H464 ML20198H468
References
HI-87112-(NP), NUDOCS 9812290341
Download: ML20198H442 (6)

Text

.,

=

FLUID FLOW IN NARROW CHANNELS SURROUNDING MOVING RIGID BODIES by i

B. Paul g'

. Director, Dynamic Systems and Structures Holtec International I

Holtec Report No. HI-87112 i

Holtec Project 61200 April, 1987

~

9812290341 981223 PDR ADOCK 05000302 P

PM1

l HOLTEC INTERNATIONAL

($

REVIEW AND CERTIFICATION LOG n

arrw annels S m mnding DOCUMENT NAME:

Moving Rigid Bodies HOLTEC DOCUMENT I.D. No.

HI-87112 HOLTEC PROJECT NO.

61200 CUSTOMER / CLIENT:

Pacific Gas & Electric I

REVISION BLOCK ISSUE NO.

AUTHOR REVIEWER QA MANAGER APPROVED

• 4 DATE

& DATE

& DATE BY & DATE N= y (g J IW

'l/.T{ m,

$l P t%

Q J,

Q fy 845 ffgOg ORIGINAL ISSUE gg i

l REVISION 1 REVISION 2 h

NOTE:

Signatures and printed names are required in the review block.

• Must be Section Director or the President.

l Th.1.s docume.nt conforms to the requirements of the design specification and the applicable sections of the governing ccdes.

This document bears the ink stamp of the professional engineer who is certifying this document.

QQOJ Professional Engineer SEAL

,. ' : E; _y Q[....m.'"h. 3 3.

> v:::. ; e. s..' ' ;r.

C.

...\\ l t

4.. e m

O

n s..

.c..g3

• J

Y M,

ABSTRACT 1

The problem investigated is the influence of fluid mass on the dynamics of a close-packed system of rigid bodies with an inviscid fluid filling the narrow channels between the bodies. The mathematical model' used and the basic assumptions of the analysis are stated, and a genera [ method of solution is given for translational planar motion of the bodies.

. Expressions for th.e kinetic energy of the fluid in each channel are developed. These expressions are used to find hydrodynamic coupling coefficients and virtual mass.

Examples are given,for several cases. It is shown that the presence of 3

the fluid has a pronounced effect on the motion. It is also shown that b

the fluid kinetic energy due to motion of one cell decays rapidly with j

distance from that cell. Estimates are given of the equivalent thickness of a single fluid channel which matches the kinetic energy of several layers of channels.

The relationship of the present analysis to the general dynamic analysis of the system is discussed, and the role of the hydrodynamic coupling

)

coefficients in the differential equations of motion is explained.

i Q' s

V,-

Holtec International

i.

s TABLE OF CONTENTS i

1.

PROBLEM STATEMENT AND SOLUTION METHOD 2.

KINETIC ENERGY OF FLUID i

3.

EXAMPLES 3.1 Two Moving Cells and Moving Mall 3.2 Two Calls, One Moving 3.3 Six Calls in Three Rows. One Moving Call

~

3.4 One Column of Five Calls, One Moving Call 4.

APPLICATION 10 DYNAMICS OF RACK STRUCTURE REFERENCES r

C y

9

\\

s m

f

l l

l REMAINDER OF DOCUMENT IS PROPRIETARY l

AND IS EXCLUDED FROM THIS NON-PROPRIETARY VERSION i

l I

i l

l ENCLOSURE 9 (Non-Proprietary Version of Attachment 7 to W3F1-98-0016, dated 1/29/98) l l

J l

1 l