Hidraulica 1 Henrique Bocais

UNIVERSIDADE ESTADUAL DE GOIÁS UNIDADE UNIVERSITÁRIA DE CIÊNCIAS EXATAS E TECNOLÓGICAS ENGENHARIA CIVIL HIDRÁULICA I

ESTUDO SOBRE BOCAIS

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ANÁPOLIS FEVEREIRO/2015

UNIVERSIDADE ESTADUAL DE GOIÁS UNIDADE UNIVERSITÁRIA DE CIÊNCIAS EXATAS E TECNOLÓGICAS ENGENHARIA CIVIL HIDRAÚLICA

ESTUDO SOBRE BOCAIS

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1

ANÁPOLIS FEVEREIRO/2015

SUMÁRIO

98: ; INTRODU8: 0 RE?ERENCIAL TEÓRICO88888888888888888888888888888888888888888888888888888888888888888888888888888888888881 >89 ; ESTUDO DOS BOCAIS8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888 1 >89890 CLASSI?ICA898> ; VA@=O NOS BOCAIS88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888881 >898 ; BOCAIS CILNDRICOS8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888 >8984 ; BOCAIS CNICOS888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888 >8981 ; BOCAIS E AGULHETAS88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888 >898 ; EX3ERIÊNCIA DE VENTURI888888888888888888888888888888888888888888888888888888888888888888888888888888888 >898 ; SUBDIVIS=O DE CARGA E) U) BOCAL8 3ERDA DE CARGA888888888888888888888F >898F ; CO)3ARA8> 0 TUBOS CURTOS SUEITOS  DESCARGA LIVRE88888888888888888888888888888888888888888888889: >8>890 NATURE@A DO 3ROBLE)A8888888888888888888888888888888888888888888888888888888888888888888888888888888889: >8>8>0 TUBOS )UITO CURTOS88888888888888888888888888888888888888888888888888888888888888888888888888888888888888889: >8>8 ; 3ERDA DE CARGA NOS ORI?CIOS E BOCAIS8888888888888888888888888888888888888888888888899 >8>840 3ERDAS NAS TUBULA >8>81 ; CONDI >8>8 ; ESCOA)ENTO E) REGI)E LA)INAR8888888888888888888888888888888888888888888888888888888888889> >8>8 ; ESCOA)ENTO E) REGI)E TURBULENTO88888888888888888888888888888888888888888888888888889 >8>8F ; 3ROCESSO EX3EDITO DE CÁLCULO DA VA@=O88888888888888888888888888888888888888888894 >8>8J ; DESCARGA DE BUEIROS88888888888888888888888888888888888888888888888888888888888888888888888888888888888891 8: 0 CONCLUS=O88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888889 48: 0 RE?ERÊNCIAS BIBLIÓGRA?IAS8888888888888888888888888888888888888888888888888888888888888888888888888889

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1.0 – INTRODUÇÃO Es%# %'a&a$+o %#m como o&K#%i*o o #s%(do d# &ocais8 Es%# -o' s(a *#, co!sis%# #m (m %(&o c('%o 6(# s# ada-%a a (m o'i5cio/ %#!do 6(as# s#m-'# (ma s#Mo %'a!s*#'sa$ ci'c($a'/ s#!do co$ocado !o'ma$m#!%# . -a'#d# do '#s#'*a%'io #  (%i$i,ado -a'a '#"($a' # di'i"i' o Ka%o8 No co'-o do %'a&a$+o  i!5o'mado so&'# a c$assi5icaMo dos %(&os a&#'%os o( %(&os adicio!ais como %am&m -od# s#' c+amado os &ocais/ #P-#'iê!cia/ #6(aQ#s 6(# -#'mi%#m o #s%(do da -#'da d# ca'"a # da *a,Mo # %am&m o %i-o d# #scoam#!%o # d# '#"im# 6(# -'#domi!a !os m#smos8

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2.0 - REFERENCIAL TEÓRICO

2.1 – ESTUDO DOS BOCAIS 2.1.1- CLASSIFICAÇÃO DOS BOCAIS Os &ocais o( %(&os adicio!ais sMo co!s%i%(dos -o' -#as %(&($a'#s ada-%adas aos o'i5cios8 S#'*#m -a'a di'i"i' o Ka%o8 O s#( com-'im#!%o d#*# #s%a' com-'##!dido #!%'# *#, # m#ia 9/1/ # %'ês  m *#,#s o s#( dim#%'o8 D# (m modo "#'a$/ # -a'a com-'im#!%os maio'#s/ co!sid#'am0s# com-'im#!%os d# 9/1 a  D como &ocais d#  a 1:: D como %(&os m(i%os c('%os d# 1:: a 4::: D a-'oPimadam#!%# como %(&($aQ#s c('%as # acima d# 4::: D como %(&($aQ#s $o!"as8 O #s%(do d# o'i5cios #m -a'#d# #s-#ssa  5#i%o do m#smo modo 6(# o #s%(do dos &ocais8

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2.1. – EPERINCIA DE VENTURI 3a'#c# -a'adoPa$ 5a%o d# a *a,Mo s# #$#*a' com a adiMo d# (m &oca$ com o &oca$/ !o*os -o!%os -a'a -#'da d# #!#'"ia sMo c'iados8 A #P-$icaMo 5oi dada -o' V#!%('i !(ma c$#&'# #P-#'iê!cia8 

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2.2.K- PERDAS NAS TUBULAÇ^ES RETIL@NEAS T'a%a!do0s#/ -o'#m/ d# (m %(&o o( d# (ma sim-$#s %(&($aMo '#%i$!#a/ a$#m da -#'da $oca$i,ada !a #!%'ada :/1*_W>" # da ca'"a co''#s-o!d#!%# ^ *#$ocidad# *_W>" #Pis%# ai!da a -#'da -o' a%'i%o ao $o!"o das -#as +5 Os *a$o'#s do co#5ici#!%# d# a%'i%o 5 *a'iam com a *#$ocidad# mdia do $6(ido # com o dim#%'o da ca!a$i,aMo/ -a'a as m#smas co!diQ#s d# %#m-#'a%('a # d# '("osidad# das -a'#d#s8 O a(m#!%o d# *#$ocidad# co''#s-o!d# a (m d#c'scimo !o *a$o' d# 5 8 No caso d# %(&os m(i%o c('%os/ com d#sca'"a $i*'#/ a di5ic($dad# '#sid# !a 5iPaMo do *a$o' ad#6(ado d# 5/ !Mo som#!%# -o'6(#/ ao s# -'oc('a' d#%#'mi!a' a *a,Mo/ a *#$ocidad#  d#sco!+#cida/ como %am&m d#*ido ao 5a%o d# !Mo s# co!%a' com *a$o'#s #P-#'im#!%ais co''#s-o!d#!%#s ^s "'a!d#s ca'"as # *#$ocidad#s #$#*adas8 9>

2.2.5 – CONDIÇ^ES DE ENTRADA NOS TUBOS E+7i!+!"%-&) +& $%!"i94)& ") )!(#+"+ !%& (*%& &% % 6%!(% ") i&(+ ()Z#i$%= )#i8i$+-&) ;*) % #)i7) !%#7+l ") )&$%+7)!(% &%7)!() < +(i!i"% +6Z& *7 $)#(% 6)#$*#&% i!i$i+l. A% 8i7 ")&&) (#)$>% ") (#+!&i9:% < ;*) &) 6%") )!$%!(#+# *7+ "i&(#i*i9:% ") )l%$i"+") $+6+3 ") $+#+$()#i3+# *7 #)i7) ") )&$%+7)!(%. D+ + !)$)&&i"+") ") &) $%!&i")#+# %& "%i& $+&%& ;*) %$%##)7 !+ 6#(i$+' % )&$%+7)!(% )7 #)i7) l+7i!+# ) % )&$%+7)!(% )7 #)i7) (*#*l)!(%.  N)!>*7+ "+& 8Z#7*l+& 6#(i$+& )&(+)l)$i"+& 6+#+ )!$+!+7)!(%&= + #i%#= 6%")#i+ &)#  +6li$+"+ 6+#+ +& $%!"i94)& ;*) 6#)+l)$)7 !)&&) (#)$>% i!i$i+l. 2.2. – ESCOAENTO E REGIE LAINAR  N#ss# caso/ s# a s#Mo d# #!%'ada !o %(&o 5o' &#m a''#do!dada/ d# modo a #*i%a' co!%'aQ#s/ %odas as -a'%c($as do $6(ido #!%'a'Mo !o %(&o # com#a'Mo a #scoa' -o' #$# com a m#sma *#$ocidad#/ #Pc#Mo 5#i%a -a'a (ma camada m(i%o -#6(#!a K(!%o ^s -a'#d#s do %(&o/ 6(# so5'#'. a s(a i!5$(ê!cia8 D# i!icio/ -o'%a!%o/ as -a'%c($as *Mo #scoa' -'a%icam#!%# com a m#sma *#$ocidad# */ s#!do V_W>" a #!#'"ia ci!%ica da massa8  m#dida 6(# as -a'%c($as 5o'#m #scoa!do ao $o!"o do %(&o/ os 5i$#%#s 6(# oc(-am a -a'%# c#!%'a$ *Mo %#!do o s#( mo*im#!%o ac#$#'ado/ ao -asso 6(# as -a'%c($as mais -'Pimas das -a'#d#s 5icam '#%a'dadas8 Como s# %'a%a d# '#"im# $ami!a'/ o -#'5i$ !o'ma$ d# *#$ocidad#s  -a'a&$ico # as co!diQ#s d# #6(i$&'io/ %#o'icam#!%#/ som#!%# s#'iam a%i!"idas a-s (ma dis%!cia i!5i!i%a8 3'a%icam#!%#/ 3'a!d%$ # Ti#%K#!s i!dicam 6(# o -#'5i$ d# #6(i$&'io  o&%ido a-s0 -#'c('so/ L[:/9 R#D 3a'a R8[9F::/ -o' #P#m-$o/ !bm#'o d# R#!o$ds/ L[>4D8

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Com o #scoam#!%o $ami!a'/ is%o / com a dis%'i&(iMo -a'a&$ica d# *#$ocidad#s/ a #!#'"ia ci!%ica s#'. i"(a$ a >8V_W>"8 No -#'c('so m#!cio!ado/ a #!#'"ia ci!%ica -assa'./ -o'%a!%o/ d# V_W>" a >V_W>"8

2.2.Q – ESCOAENTO E REGIE TURBULENTO T)%#i$+7)!()= +"7i()-&) ;*)= + 6+#(i# "+ +#)&(+ ") )!(#+"+ O= $%!&(i(*i-&) *7+ $+7+"+ )7 ;*) % )&$%+7)!(% < l+7i!+#= $+7+"+ )&&+ ;*) +i &) (%#!+!"% 7+i& )&6)&&+ +(< *7 +l%# $#i(i$% 3= + 6+#(i# "% ;*+l + )&6)&&*#+ &) #)"*3 #)6)!(i!+7)!() + *7 +l%#  #)l+(i+7)!() 6);*)!% ]= ;*) &) 7+!(8 g . H 

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4.0 - REFERÊNCIAS BIBLIÓGRAFIAS +%%-WWc('sos8(!isa!%a8&'Wm#ca!icaW-o$a'iW5o'o!omia0&ocais8-d5/   ac#ssado !o dia : d# 5#*#'#i'o d# >:94/ .s >9448 +%%-WWfff8(5-i8&'Ws(&si%#?i$#sWc%Wa'6(i*osW5i$#sW-as%aWCA38-d5/ ac#ssado !o dia : d# 5#*#'#i'o d# >:94/ .s >91F8 +%%-WWa'6(i*os8(!ama8&'W!#adW"'ad(acaoWcc#%W#!"#!+a'iah-'od(caoWs#m#s%'#W5#!om#!osh  %'a!s-o'%#W+%m$W(!idad#>Wa($a9Wa($a98-d5/ ac#ssado !o dia : d# 5#*#'#i'o d# >:94/ .s :J:48

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