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There are various methods that can be used to calculate the hydrostatic force on a submerged surface. Which of the following statements are correct? The pressure prism method gives good understanding of the fundamentals but it can only be used for plane surface uniform in the spanwise direction. (ii) (iii) The parallel axis theorem can be used for surface not uniform in the spanwise direction such as a circular or triangular plane surfaces, but it is limited to simple geometry where the second moment of area can be easily defined. The elementary area method can be used for any 2 or 3 dimensional surface as long as the geometric unit normal vector is known at any point on the surface. (ii) (iii) (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above The Eulerian frame of reference is commonly used in analyzing fluid problems instead of the Lagrangian frame of reference. The main differences between these 2 frames of reference are: (i) The steady motion in Lagrangian frame of reference implies that the acceleration is zero and thus no force is required. However for steady flow in Eulerian frame of reference, force is still required as convective acceleration arising from the definition of field variables is present. Both frames of references track the motion of fluid particles. The forces required to drive fluid in Eulerian frame of reference are surface forces such as pressure and shear stress and body forces such as gravity and centrifugal forces. They are expressed as forces per unit volume.

There are various methods that can be used to calculate the hydrostatic force on a submerged surface. Which of the following statements are correct? The pressure prism method gives good understanding of the fundamentals but it can only be used for plane surface uniform in the spanwise direction. (ii) (iii) The parallel axis theorem can be used for surface not uniform in the spanwise direction such as a circular or triangular plane surfaces, but it is limited to simple geometry where the second moment of area can be easily defined. The elementary area method can be used for any 2 or 3 dimensional surface as long as the geometric unit normal vector is known at any point on the surface. (ii) (iii) (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above The Eulerian frame of reference is commonly used in analyzing fluid problems instead of the Lagrangian frame of reference. The main differences between these 2 frames of reference are: (i) The steady motion in Lagrangian frame of reference implies that the acceleration is zero and thus no force is required. However for steady flow in Eulerian frame of reference, force is still required as convective acceleration arising from the definition of field variables is present. Both frames of references track the motion of fluid particles. The forces required to drive fluid in Eulerian frame of reference are surface forces such as pressure and shear stress and body forces such as gravity and centrifugal forces. They are expressed as forces per unit volume.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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There are various methods that can be used to calculate the hydrostatic force on a submerged surface. Which of the following statements are correct? (i) (iii) The pressure prism method gives good understanding of the fundamentals but it can only be used for plane surface uniform in the spanwise direction. The parallel axis theorem can be used for surface not uniform in the spanwise direction such as a circular or triangular plane surfaces, but it is limited to simple geometry where the second moment of area can be easily defined. The elementary area method can be used for any 2 or 3 dimensional surface as long as the geometric unit normal vector is known at any point on the surface. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above The Eulerian frame of reference is commonly used in analyzing fluid problems instead of the Lagrangian frame of reference. The main differences between these 2 frames of reference are: (i) The steady motion in Lagrangian frame of reference implies that the acceleration is zero and thus no force is required. However for steady flow in Eulerian frame of reference, force is still required as convective acceleration arising from the definition of field variables is present. Both frames of references track the motion of fluid particles. The forces required to drive fluid in Eulerian frame of reference are surface forces such as pressure and shear stress and body forces such as gravity and centrifugal forces. They are expressed as forces per unit volume. (A) (B) (C) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above
Transcribed Image Text:There are various methods that can be used to calculate the hydrostatic force on a submerged surface. Which of the following statements are correct? (i) (iii) The pressure prism method gives good understanding of the fundamentals but it can only be used for plane surface uniform in the spanwise direction. The parallel axis theorem can be used for surface not uniform in the spanwise direction such as a circular or triangular plane surfaces, but it is limited to simple geometry where the second moment of area can be easily defined. The elementary area method can be used for any 2 or 3 dimensional surface as long as the geometric unit normal vector is known at any point on the surface. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above The Eulerian frame of reference is commonly used in analyzing fluid problems instead of the Lagrangian frame of reference. The main differences between these 2 frames of reference are: (i) The steady motion in Lagrangian frame of reference implies that the acceleration is zero and thus no force is required. However for steady flow in Eulerian frame of reference, force is still required as convective acceleration arising from the definition of field variables is present. Both frames of references track the motion of fluid particles. The forces required to drive fluid in Eulerian frame of reference are surface forces such as pressure and shear stress and body forces such as gravity and centrifugal forces. They are expressed as forces per unit volume. (A) (B) (C) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above
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