In[1]:= ?VectorPlot3D
VectorPlot3D[{v , v , v }, {x, x , x }, {y, y , y }, {z, z , z }]
x y z min max min max min max
generates a 3D vector plot of the vector field {v , v , v } as a function of x, y, and z.
x y z
VectorPlot3D[{field , field ,
}, {x, x , x }, {y, y , y }, {z, z , z }]
1 2 min max min max min max
plots several vector fields.