YWXY≸⓸G 䚐ạ⫼⫤㜈㫴⏼㛨⫵䚍䟀G ḩ┍䚍㍔䟀G ⊰ⱬ㬅
ᩆᔻฺ⅊Ỻ⋪῏4$3ᰂᯊ⪂Ỷᩂ⽢⺏ݖ⼻᧧Ỷ๖ኞ⁆⽢⺏⯟ᩗỶద⺂
ᬾ❾ᩃ℧ڒ
Numerical Study on Flow Mixing Characteristics with Mixer Type in SCR system for
Marine Diesel Engine
Tae-kyung Kim1·Yonmo Sung1·Sang-jun Ha2·Seung-han Han3·Gyung-min Choi+·Duck-jool Kim4
ڮڞڭٻ㔲㓺䎲㠦㍲ٻ㥶☯䢒䞿ٻ䔏㎇㦚ٻṲ㍶䞮₆ٻ㥚䟊ٻ⚦ٻṖ㰖ٻ䡫䌲㦮ٻ䢒䞿₆⯒ٻ㍶㩫䞮㡖┺ډٻ⋲⮮䔏㎇ٻ㍳㦚ٻ㥚䟊ٻ゚㩫 ㌗㌗䌲⪲ٻ䟊㍳㦚ٻ㰚䟟䞮㡂ٻڭڨڮٻۑۀۇۊھۄۏ۔ڇٻگېۍڽېۇۀۉھۀٻڤۉۏۀۉێۄۏ۔ڇٻۑۊۍۏۄھۄۏ۔ڇٻڞۊۉھۀۉۏۍڼۏۄۊۉٻڰۉۄہۊۍۈۄۏ۔ٻ䙂⯒ٻ 䢫㧎䞮㡖┺ډ 41# ⇆ᤊ ڮڞڭٻ㔲㓺䎲㠦㍲ٻ㌂♲ٻڰۍۀڼٻ㑮㣿㞷㧊ٻ㽟ⰺٻ㭧㕂 㠦ٻ㰧㭧♮㠊ٻ㽟ⰺ㦮ٻ㑮ⳛ㦚ٻ┾㿫㔲䋺Ợٻ♮Ⳇڇٻ⡦䞲ڇٻ 㞪⳾┞㞚㦮ٻ‶㧒䞮㰖ٻⴑ䞲ٻ䢒䞿㦖ٻ㞪⳾┞㞚ٻ㔂Ⱃὒٻṯ 㦖ٻڰۍۀڼ㦮ٻ䞚㣪䞲ٻ⌃゚⯒ٻ㧒㦒䋺Ợٻ♲┺ڶڌڸډٻ➆⧒㍲ٻ ⽎ٻ㡆ῂ㠦㍲⓪ٻ䢒䞿₆㦮ٻ㹾㧊㠦ٻ➆⯎ٻ㥶☯ٻ䔏㎇ὒٻ㌂ ♲ٻڰۍۀڼٻ㑮㣿㞷㦮ٻ䢒䞿䔏㎇㠦ٻ╖䞲ٻ㡗䟻㦚ٻ㑮䂮ٻ䟊㍳㩗 㦒⪲ٻ゚ᾦٻ㍳䞮㡖┺ډٻ䟊㍳㠦ٻ㌂㣿♲ٻ䡫㌗㦖ٻ㼊㩗ٻڌۈڎٻٻ 㦮ٻ㽟ⰺ䂋㦚ٻ㌂㣿䞲ٻڮڞڭٻێ۔ێۏۀۈ㧊┺ډٻỿ㧦ٻ䡫㎇㦚ٻ㥚䟊ٻ ㌂㣿♲ٻ䝚⪲⁎⧾㦖ٻ㌗㣿ٻ䒊㧎ٻڢڼۈڽۄۏٻڍډڎٻ㦚ٻ㌂㣿䞮㡖 ἶٻỿ㧦㑮⓪ٻ㟓ٻڑڐⰢṲ⪲ٻῂ㎇♮㠊ٻ㧞┺ډٻ䢒䞿₆㠦ٻ㦮 䟊ٻ㌳䞲ٻ⋲⮮㦮ٻ䔏㎇ὒٻ䢒䞿䔏㎇㦚ٻ㞢㞚⽊₆ٻ㥚䟊ٻ㥶 䞲㼊㩗⻫㠦ٻ⁒Ệ䞲ٻ㌗㣿ٻ䝚⪲⁎⧾㧎ٻڡڧڰڠکگٻڑډڎ㦚ٻ㌂㣿 䞮㡖┺ډ 51# 㘞⇇# ᳓ᴿ# Ჹ# ⤚ഞ
Figure 1 Geometry of SCR system
(a) (b)
Figure 2 Shape of the mixer; (a) Up-down type mixer, (b) Swirl type mixer
ٻڡۄۂېۍۀٻڌ㦖ٻ䟊㍳㠦ٻ㌂㣿♲ٻ䡫㌗ὒٻ䂮㑮✺㦚ٻ⋮䌖⌊ ἶٻ㧞┺ډٻ⁎Ⰲἶٻ䢒䞿₆⓪ٻڡۄۂېۍۀٻڍ㢖ٻṯ㧊ٻڍṖ㰖ٻ䡫䌲 ⯒ٻ㌂㣿䟞㦒Ⳇٻṗٻ⋶Ṳ⓪ٻ㭒ٻ㥶☯ٻ䟻㠦㍲ٻڏڐദ⪲ٻ㍺䂮 ♮㠊ٻ㧞ἶڇٻ㥶☚ٻ䟻㠦ٻ➆⧒ٻ㌗䞮㥶☚䡫ὒٻ㓺㤪䟻㥶 ☚䡫ٻ䡫䌲㦮ٻ䢒䞿₆⯒ٻ㌂㣿䞮㡖┺ډٻ⋶ṲٻṲ㑮⓪ٻ☯㧒䞮 ỢٻڎڑṲ⯒ٻ㌂㣿䞮㡖㦒Ⳇٻ䢒䞿₆⯒ٻ䐋ὒٻ䞮⓪ٻⳊ㩗㧊ٻṯ ☚⪳ٻ⺆䂮䞮㡖┺ډٻڡۄۂېۍۀٻڎٻ㠦⓪ٻ㌂♲ٻ㑮㣿㞷㦮ٻ⏣☚ 䙂☚ڶڍڸ⯒ٻ⋮䌖⌊ἶٻ㧞┺ډ 61# ൚ඦ# Ჹ# ඊⳚ
Figure 3 Contours of Concentration Uniformity Index
㌗䞮㥶☚䡫ٻ䢒䞿₆ٻ䤚⮮㠦㍲ٻ㌳䞮⓪ٻ㧧㦖ٻ㓺䅖㧒㦮ٻ 㢖㦮ٻ㌳㎇ὒٻザ⯎ٻ㏢Ⳏ㠦ٻ㦮䟊ٻ㌂♲ٻ㞷㩗㦖ٻ㰽㦖ٻỆⰂ 㠦㍲ٻザ⯊Ợٻ䢒䞿♮ἶٻ⏨㦖ٻ⏣☚ٻ‶㧒☚⯒ٻ⽊㧎┺ډٻ Ⳋٻ㓺㤪䡫㦮ٻἓ㤆ٻ⻢䋂ٻ㓺䅖㧒㦮ٻ㢖㦮ٻ㥶☯䡫㌗㠦ٻ㦮䟊ٻ 䢒䞿ỆⰂ⓪ٻ㯳Ṗ䞾㦚ٻ⽊㧎┺ډ
