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제 1 장 유체의 정의와 기본성질 10

1 1 유체의 정의 ·························································································10

1.2 연속체(continuum) ···············································································10

1 3 유체의 분류 ·························································································11

1.4 단위와 차원(units and dimensions) ························································13

1 5 밀도, 비중량, 비체적, 비중 ······································································15

1.6 점성(粘性, viscosity) ············································································17

1.7 Newton유체와 비 Newton유체 ·······························································21

1.8 완전기체(perfect gas) ··········································································23

1 9 유체의 탄성과 압축성 ·············································································24

1 10 표면장력과 모세관현상 ··········································································28

1.11 증기압(vapor pressure) ······································································32

?연습문제 ·································································································34

제 2 장 유체 정역학 62

2 1 압력 ···································································································62

2 2 절대압력과 계기압력 ··············································································65

2 3 압력의 단위 ·························································································66

2 4 액주계(液柱計) ······················································································68

2 5 평면에 미치는 유체의 전압력 ····································································72

2 6 곡면의 한 쪽 면에 미치는 유체의 전압력 ·····················································75

2 7 부력(浮力) ···························································································77

2 8 부양체(浮揚體)의 안정성 ·········································································78

2 9 상대적 평형 ·························································································80

?연습문제 ································································································83

제 3 장 유체 운동학 116

3 1 흐르는 유체에 미치는 힘 ·······································································116

3 2 유체 흐름의 특성 ·················································································116

3 3 유선과 유적선 ·····················································································118

3 4 1차원, 2차원, 3차원 유동 ·····································································120

3.5 연속방정식(連續方程式, continuity equation) ···········································121

3.6 오일러(Euler)의 운동방정식 ···································································124

3.7 베루누이 방정식(Bernoulli’s equation) ···················································126

3 8 베루누이 방정식의 응용 ·········································································129

3 9 손실수두와 동력 ··················································································134

3.10 공동현상(cavitation) ·········································································135

?연습문제 ·······························································································138

제 4 장 역적-운동량의 원리 172

4 1 역적과 운동량 ·····················································································172

4 2 관에 작용하는 힘 ·················································································174

4 3 분류(噴流)가 날개에 작용하는 힘 ·····························································178

4 4 분사추진(噴射推進) ··············································································183

4.5 프로펠러(propeller)이론 ·······································································186

4 6 운동량 모멘트의 원리 ···········································································189

4 7 운동에너지 수정계수와 운동량 수정계수 ····················································190

?연습문제 ·······························································································192

제 5 장 실제유체의 흐름 228

5 1 층류(層流)와 난류(亂流) ········································································228

5.2 레이놀드 수(Reynolds number) ····························································229

5 3 평행평판 사이의 층류 ···········································································230

5 4 원관 속의 층류 ···················································································233

5.5 난류(亂流, turbulent flow) ··································································238

?연습문제 ·······························································································246

제 6 장 관로유동 282

6 1 원형관로에서의 압력 손실 ······································································282

6 2 비원형 관로에서의 압력손실 ···································································287

6 3 돌연확대, 돌연축소관에서의 손실 ·····························································290

6 4 점차확대, 점차축소관에서의 손실 ·····························································292

6 5 입구 및 출구손실 ·················································································293

6.6 벤드(bend) 및 엘보우(elbow)에서의 손실 ················································294

6 7 밸브 및 콕에서의 손실 ··········································································296

6 8 분기관과 합류관에서의 손실 ···································································297

6 9 관로의 총손실 및 동력 ··········································································300

6 10 복합관로에서의 흐름 ···········································································302

?연습문제 ·······························································································310

제 7 장 개수로 유동 350

7 1 개수로의 흐름상태 ···············································································350

7 2 등류 흐름 ··························································································351

7 3 최적 수력 단면 ···················································································356

7 4 비에너지, 상류와 사류 ··········································································360

7 5 수력도약 ···························································································364

7 6 중력파의 전파속도 ···············································································366

?연습문제 ·······························································································367

제 8 장 차원해석과 상사법칙 384

8 1 차원해석 ····························································································384

8 2 �� 정리 ·····························································································386

8 3 상사법칙 ····························································································389

?연습문제 ·······························································································396

제 9 장 항력과 양력 410

9 1 항력과 양력 ·······················································································410

9 2 경계층 ······························································································411

9 3 유동장 속에 놓인 물체가 받는 항력 ··························································415

9 4 원주(圓柱) 주위의 흐름과 압력항력 ··························································418

9 5 평판상의 2차원 흐름 ············································································422

9 6 양력과 익형 ·······················································································429

?연습문제 ·······························································································431

제10장 압축성유체의 흐름 452

10 1 열역학 제1법칙 ·················································································452

10 2 엔탈피 ····························································································453

10 3 비열 ·······························································································454

10 4 에너지 방정식 ···················································································456

10 5 음파의 전파속도 ················································································457

10.6 Mach수와 Mach각 ············································································458

10 7 축소-확대 노즐에서의 흐름 ··································································461

10 8 등엔트로피 흐름 ················································································462

10.9 Fanno방정식 ····················································································466

10 10 수격작용 ························································································467

10 11 충격파 ···························································································468

?연습문제 ·······························································································470

제 11 장 유체의 계측 486

11 1 밀도 및 비중의 측정 ···········································································486

11 2 점성계수의 측정 ················································································488

11 3 정압 측정 ························································································491

11 4 유속 측정 ························································································492

11 5 유량 측정 ························································································494

?연습문제 ······························································································499

부록

부록 A 유체의 물리적 성질 ········································································504

부록 B 각종 도형에 대한 도심 및 관성모멘트 ·················································506

부록 C 압축성 유동 ··················································································508

찾아보기 ·································································································515