YloSo Arm Coast. Eng Res. ST. CETA 79-6 Estimation of Wave Transmission Coefficients for Permeable Breakwaters by William N. Seelig COASTAL ENGINEERING TECHNICAL AID NO. 79-6 OCTOBER 1979 Approved for public release; distribution unlimited. U.S. ARMY, CORPS OF ENGINEERS ~ COASTAL ENGINEERING 330 RESEARCH CENTER Ne Kingman Building . 49-6 Fort Belvoir, Va. 22060 Reprint or republication of any of this material shall give appropriate credit to the U.S. Army Coastal Engineering Research Center. Limited free distribution within the United States of single copies of this publication has been made by this Center. Additional copies are available from: National Technical Information Service ATTN: Operations Division 5285 Port Royal Road Springfield, Virginia 22161 Contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. The findings in this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. HAAN LUC 0 0301 0089715 3 UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) REPORT DOCUMENTATION PAGE FR Oo es 1. REPORT NUMBER 2. GOVT ACCESSION NO, 3. RECIPIENT'S CATALOG NUMBER CETA 79-6 4. TITLE (and Subtitle) - TYPE OF REPORT & PERIOD COVERED ESTIMATION OF WAVE TRANSMISSION COEFFICIENTS Coastal Engineering FOR PERMEABLE BREAKWATERS Technical Aid 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR(s) 8. CONTRACT OR GRANT NUMBER(s) William N. Seelig 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT, PROJECT, TASK AREA & WORK UNIT NUMBERS Department of the Army Coastal Engineering Research Center (CERRE-CS) F31538 Kingman Building, Fort Belvoir, Virginia 22060 11. CONTROLLING OFFICE NAME AND ADDRESS 12, REPORT DATE Coastal Engineering Research Center 13. NUMBER OF PAGES Kingman Building, Fort Belvoir, Virginia 22060 14. MONITORING AGENCY NAME & ADDRESS(if different from Controlling Office) 15. SECURITY CLASS. (of thie report) UNCLASSIFIED 15a. DECLASSIFICATION/ DOWNGRADING SCHEDULE 16. .DISTRIBUTION STATEMENT (of this Report) Approved for public release; distribution unlimited. DISTRIBUTION STATEMENT (of the abstract entered in Block 20, If different from Report) - SUPPLEMENTARY NOTES KEY WORDS (Continue on reverse side if necessary and identify by block number) Permeable breakwaters Transmission coefficients Wave transmission 20. ABSTRACT (Continue om reverse side if necessary and identify by block number) The Madsen and White (1976) analytical model of wave transmission through permeable breakwaters is combined with a wave transmission by overtopping formula to provide a method of predicting wave transmission coefficients for permeable breakwaters. Comparison of this combined prediction technique with physical model laboratory tests shows that the technique is useful for estimating trans- mission coefficients for design. A computer program was found the most conven- lent method of making predictions. The computer program and an example showing program use are included in an Appendix. DD ass 1473 Eprtion oF t Nov 6515 OBSOLETE UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) ee ; a ae SRC ya wenger 1 eres. Shit ; tisk be rene — hg pm it re a a BFR are Ma ‘ MTB ao: 1) wheel nia gat = > . ‘ : “yey ar how aia ee 4 , toga Ne, tei Pa sh Ae Pa ak 7 Ingemar ec dl Sintra deena eee ee . ; t dite a Ry / ‘ yj iF IMGSMH You ttee vy ous roe Wa AGow Chad Sea AU ee jean } “ie Midis ‘read thd POs ae Py j , i) Bi he, ie rhea: gp guy Ae Liars HY] eos nay 0 In" AG PmeTOR hie Rudi oh eae RE a | seeded ny mays tei asheiliah caine Fan Fo dtae a UPAR 0 Hee A ¥ 0 nes deta RN ibah One seid | ahh ae 7 oan oa ake "7" FUER Tare) a Be ears, D> Be eayst AD At “hers i ) Ae ‘ IRS Ue Tey DOr yay sihh — se - ~ i ee a odo he Vo prin abes. ond ~ tm oT 7 them a tet (Shh 5 WUT IN YW testes Anbtiassoieth oe mesa ae aoiall a fi 2 | ah i. Ke é t oe AMADA Rea Ia ft t a SQOF ogre RL Eg a ! ad ae 7 nnn 7 Lig T bir Teh vas fig 1 oe “ker Sah: ae leash ey oe woe i dentin Mae a hn RiiAdh annlicncanarenmeiien ides 9 ARPT Y= 4 ey hcSeoee co libdeaaee Ph yt AN te) Wit Tee eet he aml ® Bates Seal wes m | Wie i} } Pare Weert are Hi Cone 4 atl are Rees re are os i evox cake «cio ar eh ve $74 ria Lan var. ge. ‘a aT hee ; wy) IN be ’ rey Psi 1 aldaa hans’ et RIen ioc 24nw Shot