/MONVOL/LFLUID

Block Format Keyword Describes the pressure of a linear fluid using a monitored volume.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/MONVOL/LFLUID/monvol_ID/unit_ID
monvol_title
surf_IDex                  
Ascalet AscaleP      
ρ            
fct_K fct_Mtin Fscale_K Fscale_Mtin    
fct_Mtout fct_Mpout Fscale_Mtout Fscale_Mpout    
fct_Padd fct_Pmax Fscale_Padd Fscale_Pmax    

Definition

Field Contents SI Unit Example
monvol_ID Monitored volume identifier.

(Integer, maximum 10 digits)

 
unit_ID Unit Identifier.

(Integer, maximum 10 digits)

 
monvol_title Monitored volume title.

(Character, maximum 100 characters)

 
surf_IDex External surface identifier.

(Integer)

 
Ascalet Abscissa scale factor for time based functions.

Default = 1.0 (Real)

[ s ]
AscaleP Abscissa scale factor for pressure based functions.

Default = 1.0 (Real)

[ Pa ]
ρ Fluid density.

(Real)

[ kg m 3 ]
fct_K Load curve identifier for bulk modulus K ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGlbWaae WaaeaacaWG0baacaGLOaGaayzkaaaaaa@3ABA@ .

(Integer)

 
Fscale_K Load curve scale factor for bulk modulus or constant bulk modulus. 7 [ Pa ]
fct_Mtin Load curve identifier for input mass flow rate m ˙ i n ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaaceWGTbGbai aadaWgaaWcbaGaamyAaiaad6gaaeqaaOWaaeWaaeaacaWG0baacaGL OaGaayzkaaaaaa@3CFC@ .

(Integer)

 
Fscale_Mtin Load curve scale factor for input mass flow rate or constant input mass flow rate. 7 [ kg s ]
fct_Mtout Load curve identifier for mass flow rate m ˙ o u t ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaaceWGTbGbai aadaWgaaWcbaGaam4BaiaadwhacaWG0baabeaakmaabmaabaGaamiD aaGaayjkaiaawMcaaaaa@3E02@ .

(Integer)

 
Fscale_Mtout Load curve scale factor for output mass flow rate or constant output mass flow rate. 7 [ kg s ]
fct_Mpout Load curve identifier for output mass flow rate m ˙ o u t ( p ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaaceWGTbGbai aadaWgaaWcbaGaam4BaiaadwhacaWG0baabeaakmaabmaabaGaamiC aaGaayjkaiaawMcaaaaa@3DFE@ as a function of pressure.

(Integer)

 
Fscale_Mpout Load curve scale factor for output mass flow rate or constant output mass flow rate. 7 [ kg s ]
fct_Padd Load curve identifier for additional pressure P a d d ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGqbWaaS baaSqaaiaadggacaWGKbGaamizaaqabaGcdaqadaqaaiaadshaaiaa wIcacaGLPaaaaaa@3DAD@ .

(Integer)

 
Fscale_Padd Load curve scale factor for additional pressure or constant additional pressure. 7 [ kg s ]
fct_Pmax Load curve identifier for maximum pressure P max ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGqbWaaS baaSqaaiGac2gacaGGHbGaaiiEaaqabaGcdaqadaqaaiaadshaaiaa wIcacaGLPaaaaaa@3DC9@ .

(Integer)

 
Fscale_Pmax Load curve scale factor for maximum pressure or constant maximum pressure. 7 [ Pa ]

Comments

  1. The pressure inside the monitored volume is defined as:(1)
    P( t )=K( t )ln( V 0 ( t ) V( t ) )+ P add ( t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGqbWaae WaaeaacaWG0baacaGLOaGaayzkaaGaeyypa0Jaam4samaabmaabaGa amiDaaGaayjkaiaawMcaaiabgwSixlGacYgacaGGUbWaaeWaaeaada WcaaqaaiaadAfadaWgaaWcbaGaaGimaaqabaGcdaqadaqaaiaadsha aiaawIcacaGLPaaaaeaacaWGwbWaaeWaaeaacaWG0baacaGLOaGaay zkaaaaaaGaayjkaiaawMcaaiabgUcaRiaadcfadaWgaaWcbaGaamyy aiaadsgacaWGKbaabeaakmaabmaabaGaamiDaaGaayjkaiaawMcaaa aa@53AF@
  2. surf_IDex must be defined using segments associated with 4- or 3-nodes shell elements (possibly void elements) and not with /SURF/SEG.
  3. The shell elements that define the surface of the monitored volume should not be deleted or eroded.
  4. The volume must be closed and the normals must be oriented outwards.
  5. Abscissa scale factors are used to transform abscissa units in airbag functions, for example:(2)
    f ( t ) = f ( t A s c a l e t ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGMbWaae WaaeaacaWG0baacaGLOaGaayzkaaGaeyypa0JaciOzamaaBaaaleaa aeqaaOWaaeWaaeaadaWcaaqaaiaadshaaeaacaWGbbGaam4Caiaado gacaWGHbGaamiBaiaadwgadaWgaaWcbaGaamiDaaqabaaaaaGccaGL OaGaayzkaaaaaa@4625@
    Where, t MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGqbaaaa@3733@ is the time.(3)
    f ( p ) = f ( p A s c a l e P ) MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGMbWaae WaaeaacaWGWbaacaGLOaGaayzkaaGaeyypa0JaamOzamaabmaabaWa aSaaaeaacaWGWbaabaGaamyqaiaadohacaWGJbGaamyyaiaadYgaca WGLbWaaSbaaSqaaiaadcfaaeqaaaaaaOGaayjkaiaawMcaaaaa@45C2@

    Where, p MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbbG8FasPYRqj0=yi0dXdbba9pGe9xq=JbbG8A8frFve9 Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGqbaaaa@3733@ is the pressure.

  6. Fluid mass is computed as:(4)
    m ( t ) = m ( 0 ) + 0 t m ˙ i n ( t ) d t 0 t m ˙ o u t ( t ) d t 0 t m ˙ o u t ( p ) d t MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGTbWaae WaaeaacaWG0baacaGLOaGaayzkaaGaeyypa0JaamyBamaabmaabaGa aGimaaGaayjkaiaawMcaaiabgUcaRmaapedabaGabmyBayaacaWaaS baaSqaaiaadMgacaWGUbaabeaakmaabmaabaGaamiDaaGaayjkaiaa wMcaaiaadsgacaWG0baaleaacaaIWaaabaGaamiDaaqdcqGHRiI8aO GaeyOeI0Yaa8qmaeaaceWGTbGbaiaadaqhaaWcbaGaam4Baiaadwha caWG0baabaaaaOWaaeWaaeaacaWG0baacaGLOaGaayzkaaGaamizai aadshaaSqaaiaaicdaaeaacaWG0baaniabgUIiYdGccqGHsisldaWd Xaqaaiqad2gagaGaamaaDaaaleaacaWGVbGaamyDaiaadshaaeaaaa GcdaqadaqaaiaadchaaiaawIcacaGLPaaacaWGKbGaamiDaaWcbaGa aGimaaqaaiaadshaa0Gaey4kIipaaaa@65E7@
  7. If the load curve identifier fct_ is defined, then the Fscale_ is a scale factor for the load curve with a default value = 1.0:

    K ( t ) = F s c a l e _ K f c t _ K MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGlbGaci ikaiaadshacaGGPaGaeyypa0JaamOraiaadohacaWGJbGaamyyaiaa dYgacaWGLbGaai4xaiaadUeacqGHflY1caWGMbGaam4yaiaadshaca GGFbGaam4saaaa@4979@

    If the load curve identifier fct_ is not defined, then Fscale_ defines a constant input value:

    K ( t ) = F s c a l e _ K MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqGqFfpeea0xe9vq=Jb9 vqpeea0xd9q8qiYRWxGi6xij=hbba9q8aq0=yq=He9q8qiLsFr0=vr 0=vr0db8meaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGlbGaci ikaiaadshacaGGPaGaeyypa0JaamOraiaadohacaWGJbGaamyyaiaa dYgacaWGLbGaai4xaiaadUeaaaa@42B0@