lapres reynold number
TRANSCRIPT
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BILANGAN REYNOLD
DAFTAR ISI
COVER
LEMBAR PENGESAHAN ........................................................................................ i
KATA PENGANTAR ............................................................................................... ii
INTI SARI ................................................................................................................. iii
DAFTAR ISI...................................................................................................................
1
BAB I PENDAHULUAN
I.1 Latar Belakan...........................................................................................................................
!
I.! T"#"an Per$%&aan...........................................................................................................................
!
I.' Man(aat Per$%&aan
...........................................................................................................................!
BAB II TIN)AUAN PUSTAKA
II.1 Da*ar Te%ri...........................................................................................................................
'
BAB III PERCOBAAN
III.1 Ba+an ,an Di-erl"kan...........................................................................................................................
III.! Alat ,an Di"nakan...........................................................................................................................
III.' Ga/&ar Alat...........................................................................................................................
III.0 Pr%*e"r Per$%&aan...........................................................................................................................
2
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 1
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BILANGAN REYNOLD
BAB IV HASIL DAN PEMBAHASAN
IV.1 Ha*il Pena/atan...........................................................................................................................
13
IV.! Ha*il Per+it"nan...........................................................................................................................
11
IV.' Gra(ik an Pe/&a+a*an...........................................................................................................................
1!
BAB V KESIMPULAN DAN SARAN
V.1 Ke*i/-"lan...........................................................................................................................
14
V.! Saran...........................................................................................................................
14
DAFTAR PUSTAKA.....................................................................................................
15
APPENDI6....................................................................................................................
1
BAB I
PENDAHULUAN
I.1 Latar Belakang
Pr%*e*7-r%*e* in"*tri *erin kali /e/erl"kan -enaliran (l"ia /elal"i
-i-a8 k%n"it 9*al"ran: an -eralatan -r%*e*8 (l"ia ;an /enalir ata" ina/ika
(l"ia ter*e&"t &erkaitan enan %-era*i7%-era*i -er-ina+an /a**a8 -er-ina+an
-ana*8 an tanki &er-ena"k.
Fl"ia a-at /enalir ala/ *"at" -i-a ata" *al"ran /en"r"t "a $ara
;an &erlainan. Paa la#" aliran rena+8 -en"r"nan tekanan i ala/ (l"ia it"
&erta/&a+ *e$ara lan*"n /en"r"t ke$e-atan (l"ia8 -aa la#" tini8
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 2
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BILANGAN REYNOLD
-erta/&a+ann;a le&i+ $e-at lai. Per&eaan antara ke"a #eni* aliran -erta/a kali
it"n#"kkan ala/ *"at" -er$%&aan kla*ik ari OSBORNE RE,NOLD -aa
ta+"n 1'. P%la aliran &er"-a ari*7ari* l"r"* an *e#a#ar /er"-akan aliran
la/inar *eankan a-a&ila &er&ent"k aliran *ilan an -"*aran /er"-akan aliran
t"r&"len.
1.2. Tujuan Praktikum
T"#"an ari -er$%&aan ini aala+ "nt"k /enet"kan &ilanan re;n%l
9NRe: kriti* "nt"k air ;an /enalir *e$ara
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Fl"ia ie(ini*ikan *e&aai =at ;an tiak a-at /ena+an -er"&a+an
&ent"k 9i*t%r*i: *e$ara -er/anen. Bila kita $%&a /en"&a+ &ent"k /a**a (l"ia8
/aka iala/ (l"ia it" ter&ent"k la-i*an7la-i*an i/ana *at" la-i*an /el"n$"r
iata* la-i*an ;an lain8 +ina /en$a-ai &ent"k &ar".
Tekanan ikenal *e&aai *i(at a*ar ari (l"ia *tatik8 tekanan ikenal
*e&aai a;a -er/"kaan ;an i&erikan %le+ (l"ia ter+aa- inin &e#ana.
Tekanan tera-at -aa *"at" titik iala/
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BILANGAN REYNOLD
Aliran (l"ia ala/ -i-a8 &era*arkan &e*arn;a &ilanan re;n%l
i&eakan /en#ai aliran la/inar8 aliran tran*i*i8 an aliran t"r&"len. Dala/ +al
ini #ika nilai NRe ke$il aliran akan /el"n$"r iata* la-i*an lain ;an ikenal
enan aliran la/inar *eankan #ika aliran7aliran tai tera-at ari* ear tertent"
;an a-at ili+at8 aliran ini i*e&"t aliran t"r&"len.
Bilanan Re;n%l /er"-akan &e*aran (i*i* ;an tiak &eri/en*i.
Bilanan ini i-er"nakan *e&aai a$"an ala/ /e/&eakan aliran la/inier an
t"r&"len i *at" -i+ak8 an i lain -i+ak a-at i/an(aatkan *e&aai a$"an "nt"k
/eneta+"i #eni*7#eni* aliran ;an &erlan*"n ala/ air. Hal ini ia*arkan -aa
*"at" keaaan &a+>a ala/ *at" ta&"n-i-a ata" ala/ *at" te/-at /enalirn;a
air8 *erin ter#ai -er"&a+an &ent"k aliran ;an *at" /en#ai aliran ;an lain.
Per"&a+an &ent"k aliran ini -aa "/"/n;a tiakla+ ter#ai *e$ara ti&a7ti&a teta-i
/e/erl"kan >akt"8 ;akni *"at" >akt" ;an relati( -enek enan iketa+"in;a
ke$e-atan kri*ti* ari *"at" aliran. Ke$e-atan kriti* ini -aa "/"/n;a akan
i-enar"+i %le+ "*a;aran -i-a8 #eni* =at $air ;an le>at ala/ -i-a ter*e&"t.
Tera-at e/-at &e*aran ;an /enent"kan a-aka+ aliran ter*e&"t
i%l%nkan aliran la/inier ata"ka+ aliran t"r&"len. Kee/-at &e*aran ter*e&"t
aala+ &e*aran /a**a #eni* air8 ke$e-atan aliran8 kekentalan8 an ia/eter -i-a.
K%/&ina*i ari kee/-atn;a akan /enent"kan &e*arn;a &ilanan Re;n%l. Ole+
*e&a& it"8 &ilanan Re;n%l a-at it"li*kan ala/ kee/-at &e*aran ter*e&"t
*e&aai &er*;arat.
NRe? 9< D:
Keteranan
NRe &iLanan Re;n%l
/a**a #eni*
Vi*$%*ita*Kekentalan
< Ke$e-atan Aliran
D Dia/eter Pi-a
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 5
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BILANGAN REYNOLD
Ha*il -er+it"nan &era*arkan ek*-eri/en ia-atkan ketent"an &a+>a "nt"k
&ilanan Re;n%l &er*;arat
3!1338 aliran i*e&"t la/inier
!133 NRe 03338 aliran i*e&"t tran*i*i antara la/inier an aliran t"r&"len
NRe 03338 aliran t"r&"len
II.2 (i#k"#ita#
Vi*k%*ita* (l"ia /er"-akan "k"ran keta+anan *e&"a+ (l"ia ter+aa-
e(%r/a*i ata" -er"&a+an &ent"k. Vi*k%*ita* i-enar"+i %le+ te/-erat"r8
tekanan8 k%+e*i an la#" -er-ina+an /%/ent"/ /%lek"larn;a. Vi*k%*ita* =at
$air $ener"n /en"r"n enan *eirin &erta/&a+n;a kenaikan te/-erat"r +al ini
i*e&a&kan a;a a;a k%+e*i -aa =at $air &ila i-ana*kan akan /enala/i
-en"r"nan enan *e/akin &erta/&a+n;a te/-erat"r -aa =at $air ;an
/en;e&a&kan &ert"r"n;a
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t ? Aala+ >akt" 9 * :
V ? Aala+ a/t" ;an $e-at ;an *elan#"tn;a /e/e$a+ an /en#ai
takterli+at.
Fakt%r ;an /e/-enar"+i aliran la/inar an t"r&"len aala+ &ilanan
Re;n%l*. Dala/ /ekanika (l"ia8 $ilangan %e&n"l'#aala+ ra*i% antara a;a
iner*ia ter+aa- a;a
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BILANGAN REYNOLD
ter*e&"t enan *"at" k%ni*i aliran tertent". Bilanan ini i"nakan "nt"k
/enientika*ikan #eni* aliran ;an &er&ea8 /i*aln;a la/inar an t"r&"len.
Bilanan Re;n%l /er"-akan *ala+ *at" &ilanan tak &eri/en*i ;an -alin
-entin ala/ /ekanika (l"ia an i"nakan8 *e-erti +aln;a enan &ilanan tak
&eri/en*i lain8 Unt"k /e/&erikan kriteria "nt"k /enent"kan dynamic
similitude. )ika "a -%la aliran ;an /iri- *e$ara e%/etri*8 /"nkin -aa (l"ia
;an &er&ea an la#" alir ;an &er&ea -"la8 /e/iliki nilai &ilanan tak
&eri/en*i ;an rele
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BILANGAN REYNOLD
III.3 0am$ar 'an #u#unan alat
Keteranan Ga/&ar
1. Tanki -ena/-"n air . Kran
!. Ta&"n ka$a 4. Air /a*"k ari kran
'. Tanki -e/&"anan 5. Pi-a -e/&"anan air %
0. Tanki =at >arna . Pi-a =at >arna
III.3. Pr"#e'ur Per"$aan
1. Alirkan air ke tanki -ena/-"nan an ke/"ian t"n" +ina k%n*tan.
Selan#"tn;a &"ka kran =at >arna.
!. Catat ke$e-atan
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BAB I(
E(ALUAI DATA
I(. 1. Ta$el Pengamatan
Putara
n
!ran
aktu
*#+
(1
*m3+
(2
*m3+
(3
*m3+
(ratarata
*m3+
4
*m35#+
Jeni#
Aliran
1
!5 ! ! !4845 8'' La/iner
13 '! '3 '4 '!845 '8!5 La/iner
1 04 0 0! 008'' !82 La/iner
!3 3 02 ! 38'' !83 La/iner
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 1"
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BILANGAN REYNOLD
10
04 0 0! 008'' 84 La/iner
13 53 50 53 518'' 581' La/iner
1 13! 1!3 113 113845 58' La/iner
!3 !13 !33 104 !3! 13813 La/iner
1'
43 4! 45 4' 1!843 La/iner
13 10 13 1 1' 18'3 La/iner
1 !0 !! !3 !! 1483 La/iner
!3 !4! !4 !43 !4!8'' 1'81! La/iner
!
23 4 5 15803 La/iner
13 !33 !!' !1' !1! !18!3 La/iner
1 '1! '33 !24 '3!845 !381 La/iner
!3 '3 '53 '4 '4!845 181' La/iner
I(.2 Ta$el Per/itungan
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 11
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BILANGAN REYNOLD
Putara
n
!ran
aktu
*#+
D
*m+
A
*m2+
4
*m35#+
6
*m5#+
7
*gr5m3+
8
*)#+
N%e f
1
182 !8' 8'' 183 382 3831 '0! 38305
13 182 !8' '8!5 181 382 3831 !18 3835'
1 182 !8' !82 183 382 3831 122803 3833
!3 182 !8' !83 38 382 3831 14580 3832
10
182 !8' 84 '81' 382 3831 2085 383!5
13 182 !8' 581' !8! 382 3831 058 383''
1 182 !8' 58' !841 382 3831 0282 383'!
!3 182 !8' 13813 '83 382 3831 458' 383!0
1'
182 !8' 1!843 080 382 3831 08 38312
13 182 !8' 18'3 801 382 3831 13!582 38314
1 182 !8' 1483 820 382 3831 11!84 38310
!3 182 !8' 1'81! 0840 382 3831 184 3831
!
182 !8' 15803 481 382 3831 1148 38310
13 182 !8' !18!3 5802 382 3831 10!'81 38311
1 182 !8' !381 581' 382 3831 1'085 3831!
!3 182 !8' 181' 4801 382 3831 1!1582 3831'
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BILANGAN REYNOLD
I(.3 0rafik 'an Pem$a/a#an
Bukaan !ran 6# !ee)atan ("lumetrik
"#15 "#2 "#25 "#3 "#35 "#4 "#45"
5
1"
15
2"
25
5 $et%&1" $et%&
15 $et%&
2" $et%&
Bukaan Kran
Q (cm3/s)
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 13
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0am$ar 1. 0rafik Bukaan !ran 6# 4 'alam -9 1:9 1-9 2: 'etik
Paa a/&ar i ata* tera-at ra(ik &"kaan kran
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BILANGAN REYNOLD
"#15 "#2 "#25 "#3 "#35 "#4 "#45"
1
2
3
4
5
6
7
5 $et%&
1" $et%&
15 $et%&
2" $et%&
Bukaan Kran
v (cm/s)
0am$ar 2. 0rafik Bukaan !ran 6# 6 'alam -9 1:9 1-9 2: 'etik
Paa a/&ar i ata* tera-at ra(ik &"kaan kran a *etia- 7!3 etik8 &"kaan
kran an ke$e-atan linier &er&anin l"r"*. Se/akin &e*ar &"kaan kran8 /aka
ke$e-atan linier ;an i+a*ilkan *e/akin &e*ar.
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 15
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BILANGAN REYNOLD
!ee)atan Linier 6# Bilangan %e&n"l'
" 1 2 3 4 5 6 7 "
2""
4""
6""
""
1"""
12""
14""
16""
B'&aa( 1/5
B'&aa( 1/4
B'&aa( 1/3
B'&aa( 2/5
v (cm/s)
NRe
0am$ar 3. 0rafik 6 6# N%e)a'a $ukaan kran 15-9 15,9 1539 25- 'alam -9 1:9 1-9 2: 'etik
Paa a/&ar i ata* tera-at ra(ik ke$e-atan linier a *etia- 7!3 etik8
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 16
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BILANGAN REYNOLD
ke$e-atan linier an &ilanan re;n%l &er&anin l"r"*. Se/akin &e*ar ke$e-atan
linier8 /aka &ilanan re;n%l *e/akin &e*ar.
Bilangan %e&n"l' 6# ;akt"r ;rik#i
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" 2"" 4"" 6"" "" 1""" 12"" 14"" 16"""
"#"1
"#"1
"#"2
"#"2
"#"3
"#"3
"#"4
B'&aa( 1/5
B'&aa( 1/4
B'&aa( 1/3
B'&aa( 2/5
NRe
f
0am$ar ,. 0rafik N%e6# f )a'a $ukaan kran 15-9 15,9 1539 25- 'alam -9 1:9 1-9 2: 'etik
Paa a/&ar i ata* tera-at ra(ik &ilanan re;n%l a *etia- &"kaan kran 1
*a/-ai enan !8 &ilanan re;n%l an (akt%r (rik*i &er&anin ter&alik.
Se/akin &e*ar &ilanan re;n%l n;a8 /aka (akt%r (rik*i ;an ter#ai *e/akin
ke$il. Beit" -"la *e&alikn;a.
PRAKTIKUM OPERASI TEKNIK KIMIA II Page 1
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BAB (
!EIMPULAN DAN A%AN
(.1 !e#im)ulan
Setela+ /elak"kan -raktik"/ /enenai Bilanan Re;n%l a-at
ia/&il &e&era-a ke*i/-"lan *e&aai &erik"t
1. )eni* aliran ;an tera-at -aa &"kaan kran 1 *a/-ai ! aala+
la/inar.
!. Dala/ >akt" ;an *a/a8 *e/akin &e*ar &"kaan kran /aka *e/akin &e*ar
ke$e-atan
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BILANGAN REYNOLD
. Nilai Bilanan Re;n%l an (akt%r (rik*i &er&anin ter&alik. Se/akin
&e*ar Bilanan Re;n%l *"at" (l"ia /aka *e/akin ke$il (akt%r (rik*i n;a.
Beit" -"la *e&alikn;a.
(.2 aran
1. Praktikan +ar"* teliti ala/ -en"k"ran
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+tt-(at+%rra/an0.&l%*-%t.$%/!31'31la-%ran7-rak7%tk7i.+t/l
+tt-aranit;%nar"t%/%.&l%*-%t.$%/!31!30aliran7la/inar7an7aliran7
t"r&"len7-aa.+t/l
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BILANGAN REYNOLD
APPENDI